Stirring the brown paint

The act of having anal sex with a man or woman when they have diarrhoea.

Guy 1: Hey dude, wanna here something gross? I stirred the paint with a chick I met at the bar the other night.

Guy 2: That's nothing! I met a guy at the bar and I was stirring the brown paint all night long!

by Dr_Maseuss October 1, 2016