"Malapropism is the act of using an incorrect word in place of one that is similar in pronunciation. The word comes from a character named Mrs. Malaprop in the play "The Rivals" by Richard Brinsley Sheridan." Just for fun I make a hobby of watching out for these, as it makes me roll up. Ok , so here goes, if anyone can think of some then add it to the list Heres a couple of heard to start us off. 'Well its not rocket surgery' 'Pull the rug from under the carpet' 'Burning the midnight oil at both ends'