Is there a word that descrpibes the use of say word A to describe word B but word A has the opposite meaning...I'll explain..
Doctor asks.." how are you finding your new diet "?
Teenage patient.." it's phat "
Waiter to teen " how's your food? "
Teen " Sick " ( means awesome )
I thought of these two today whilst preparing tea. I'm sure there must be others but can't think of any, and these two are modern variants that would of only come about the last few years.