Evinruding 

Anal motor-boating. Planting your mouth between the buttocks and shaking your face side to side accompanied by a motor boat like sound.

Last night I was evinruding that guys tight ass.

Evinruding by balthy buns October 17, 2013

Evinrudin' 

Being obnoxious while "trolling" down the river.

"Trollin' wasn't something they was doin, its called evinrudin'."

Evinrudin' by RRGERSTER July 11, 2023