Always a stitch, our Mrs Malaprop.

"No caparisons miss, if you please."
"His physiognomy so grammatical!"
"my affluence over my niece is very small."
"What - am I to thank you for the elegant compilation of an old weather-beaten she-dragon - hey?"
"we will not anticipate the past! … our retrospection will be all to the future."
"I'm quite analyzed for my part!"
"you are not like Cerberus, three gentlemen at once, are you?"

I think my favorite bit this Act is the Hamlet misquote, but since I covered that in another post, I'll choose "His physiognomy so grammatical!"