Flutterbutt

The fondling of one's butt crack in a rhythmic flute like manner, often in a joking situation, occasionally in a sensual one.

Sean wrestled Andrew down to the ground and gave him a flutterbutt

by buttcrackmcgee August 12, 2011

Flutterbutter

The overwhelming feeling of dread caused by dropping your piece of toast and seeing it fall on the floor buttered-side-down

*Avraxia drops toast* "Did it...? GODS NO!! IT FELL BUTTER-SIDE-DOWN!!!"
*Silver hears racket* "Avarxia, are you all flutterbutter again??"

by Silver Zoldyck August 29, 2016

flutterbutt

The noise made by butt cheeks flapping together as gas is expelled violently. This usually occurs after consuming several bean burritos, drinking a warm coke and jumping on a trampoline.

George sure is noisy today. He has a terrible case of flutterbutt

by Tannasgh February 14, 2006