1. Flushing the toilette more than once and ASAP to reduce the unpleasant scent of your own turd(s).
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.
Redneck/Jail/Prison definitions:
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.