Frais
En être pour ses frais = To have lost one’s money (or, pains) for nothing.
Faire des frais = (lit.) To go to expense; (fig.) To make efforts to please.
Faire ses frais = To cover one’s expenses.
Faire les frais de la conversation = 1. To keep a conversation going. 2. To be (oneself) the subject of conversation.
En bon français = (lit.) In good French; (fig.) In plain English (i.e. without mincing matters).
Parler français comme une vache espagnole = To speak French very badly.
[This is said to be a corruption of comme un Basque espagnol (formerly written Vace). The Basques speak French with a very bad accent, owing to their language having no relation whatever to the Romance tongues.]
Franquette