He mimicked Quin as a watchman, with deep, sonorous voice calling out, "Past twelve o'clock, and a cloudy morning"; Delane as a one-eyed beggar; Peg Woffington as an orange girl, and imitated the unpleasant squealing tone of her voice; Garrick in his dying scenes, on which he prided himself.

As may well be supposed, actors, who are peculiarly sensitive to ridicule, were offended. When they appeared in a grave play, as for instance, when Garrick was dying on the stage, the audience laughed, recalling what they had witnessed at the Haymarket. They complained, "What is fun to you is death to us," but Foote paid no regard to their remonstrances; he laughed and pursued his course. He was perfectly unscrupulous, wholly devoid of delicacy of feeling, and would turn his best friend and benefactor into ridicule in public. But when, later, Weston took him off, he was highly incensed, and bided his time to be revenged on him.

Next year Foote called his performance "An Auction of Pictures." Here is one of his advertisements: "At the forty-ninth day's sale at his auction rooms in the Haymarket Mr. Foote will exhibit a choice collection of pictures—some new lots, consisting of a poet, a beau, a Frenchman, a miser, a taylor, a sot, two young gentlemen, and a ghost. Two of which are originals, the rest copies from the best masters." In this several well-known characters were mimicked—Sir Thomas Deveil, then the acting magistrate for Westminster, Cook, the auctioneer, and orator Henley. To the attractions of his "Auction," in ridicule of the Italian Opera, he gave a "Cat Concert." The principal performer in this was a man well known at the time by the name of Cat Harris. Harris had attended several rehearsals, where his mewing gave great satisfaction to the manager and performers. However, on the last rehearsal Harris was missing, and as nobody knew where he lived, Shuter was deputed to find him, if possible. He inquired in vain for some time; at last he was informed that he lived in a certain court in the Minories, but at which house he could not exactly learn. Shuter entered the court and set up a cat solo, which instantly roused his brother musician in his garret, who answered him in the same tune. "Ho, ho! Are you there, my friend?" said Shuter. "Come along; the stage waits for you."

Fashion, as usual, flocked to the Haymarket to hear and see its tastes turned into ridicule.

At the close of the season (1748) Foote was left a considerable fortune by a relative of his mother, which enabled him to move in all that luxury of dissipation which was so congenial to his temper. Then he departed suddenly for Paris and communicated with none of his friends. Some supposed him to have been killed in a duel, some that he had been hanged, some that he had drunk himself to death. But he reappeared in London at the close of the season of 1752, having dissipated the fortune left him, but having enriched his mind with studies made in France. He brought with him a play he had composed, The Englishman in Paris, which was brought out at Covent Garden Theatre on March 24th, 1753, and it proved a success; so much so, that Murphy, the dramatic author, wrote a sequel to it, The Englishman returned from Paris, which he had the frankness to show to Foote, who was his friend. Foote, without a word, without asking leave, appropriated the plot and characters, and turned out a farce with the same title before Murphy had placed his. Murphy was, naturally, highly offended, and produced his play in another theatre, but without great success, as Foote's play had already taken with the public.

In the season of 1757 Foote produced at Drury Lane his comedy of The Author, that principally turns on the distresses incident to a writer dependent on his pen for his daily bread, and on the caricature of a gentleman of family and fortune, whom he entitled Cadwalader, who appears ambitious to be thought a patron of the arts and sciences, of which he is profoundly ignorant. Cadwalader was a caricature of one of his most intimate friends, a Mr. Ap Rice, a man of fortune and education, and allied to many families of distinction. At his table, where Foote was hospitably received, in open and unguarded familiar discourse, Ap Rice had laid himself open to ridicule. The Welsh gentleman was stout, had a broad, unmeaning stare, a loud voice, and boisterous manner, and as he spoke his head was continually turning to his left shoulder. The farce was performed for several nights to crowded audiences before Mr. Ap Rice felt the keenness of the satire. At last the joke became so serious, that whenever he went abroad, in the park, the coffee-house, or the assembly, he heard himself spoken of as Cadwalader, and pointed at with suppressed laughter, or heard quotations from his part in the play: "This is Becky, my dear Becky." Mightily offended, and really hurt, he applied to Foote to have the piece suppressed. But this Foote would not hear of—it was drawing crowded houses. Then Ap Rice applied to the Lord Chamberlain and obtained an injunction to restrain the performance.

Dr. Johnson was informed by a mutual friend that Foote was going to produce an impersonation of him on the stage. "What is the price of a cane?" asked the doctor. "Sixpence." "Then," said he, "here is a shilling; go and fetch me the stoutest you can purchase, and tell Mr. Foote that at his first performance I shall visit the theatre, go on the stage, and thrash him soundly."

This was repeated to the mimic, and he deemed it advisable to desist from this impersonation.

In A Trip to Calais he threatened to ridicule the notorious Duchess of Kingston unless bought off. The audacity of his personalities was astounding, where he thought he could use his gift of mimicry without being subject to chastisement. In the Orators, 1762, he personated, under the name of Peter Paragraph, a noted printer and publisher and alderman of Dublin, known as One-legged Faulkener. The imitation was perfect. The Irishman brought an action for libel against him, and a trial ensued. But Nemesis of another sort fell on him four years later. In 1766 he was on a visit to Lord Mexborough, where he met the Duke of York, Lord Delaval, and others, when some of the party, wishing to have a little fun with Foote, drew him into conversation on horsemanship, and the comedian boasted "that although he generally preferred the luxury of a post-chaise, he could ride as well as most men he knew." He was urged to join that morning in the chase, and was mounted on a high-spirited, mettlesome horse belonging to the Duke of York, that flung him as soon as he was in the saddle, and his leg was so fractured that it had to be amputated, and its place supplied by one of cork.

The Duke of York was not a little concerned at the part he had taken in this practical joke, and to make what amends he could obtained for him a royal patent to erect a theatre in the city and liberties of Westminster, from the 14th May to the 14th September, during the term of his natural life. This was giving him a fortune at one stroke, and Foote immediately purchased the old premises in the Haymarket and erected a new theatre on the same ground, which was opened in the May following, 1767. He made considerable profits, and lodged twelve hundred pounds at his banker's and kept five hundred in cash.