frosting the perimeter

When a man has explosively violent diahorrea and the majority of it ends of splattered on the sides of the bowl, as opposed to going straight down the hatch.

“Bro, I straight frosted that perimeter!”

“Couple of the OGs admired all the splatter after the young buck was done fully frosting the perimeter.”

“Couple of the guys noticed Boris had frosted the perimeter something fierce and complimented him for being woke.”