When you take a crap containing half feces, half gas. The solid is propelled at such a rate that the entire inside of the toilet bowl is lined in crap.
When it is hot outside and your balls are sweating and they stick to the side of your inner thighs, and you have to pull them off (They are sticking like wallpaper)
An act, (usually homosexual) where one party is standing, spread, facing a wall (much like when a police man performs a search). And the other member relentlessly ravages them from behind. Thus resembling two people putting up wall paper.
