mug
»Do you take me for a mug?» (Tommy And Co. 46. 20.)
A London brat of the working class.
He »took to» me, he said, because I was »so jolly green»—»such a rummy little mug.»
A schoolboy.
»Are you the rich mug Vane’s been representing you to be?» (P. Kelver II. 224. 28.)
An actress.
»Keep your mug shut about Oxford.» (Novel Notes 203. 26.)
Uncultivated young man.
Mug in the first three quotations is a vulgarism and means simpleton, greenhorn; in the last, it is another word (thieves’ cant) for mouth or face.