Well I know I hate making people wait for the toilet but I can't help it.
The toilets at work have a sign saying "if you have made a mess clean it up", I'm guessing that means the toilet bowl as well (there's a brush available). So I go, flush, see the lovely Monet painting I left on the ceramic, wait for the cistern to fill up while cleaning the bowl, flush again.
I don't apologize to nobody for taking the time to flush twice man, I'm just doing what the sign says.