2. Something you had better do when you are in jail or prison, so your cellmate(s) don't/doesn't give you a beatdown. LOL!
3. If it smells bad to you, how much worse will it smell to the other person if you don't have the common sense, or the decency to do a courtesy flush.
EX: Dude! Could you at LEAST do a courtesy flush!?!?!?!?
EX 2: If you don't do a courtesy flush you'll be getting a blanket party tonight!
Ex 3: If you don't want a swirly. gimme a courtesy flush over there.
Mostly used in awkward situations.
This being the first time he had dumped in Mr. And Mrs. Di Carlo he flushed twice even though one should have been enough.
Matt demonstrated the courtesy flush.