An instance in which two or more people (human or otherwise) touch their individual butt-holes to that of another person.
by HumanButterfly enthusiast April 18, 2020

it is the fanmade stan name for hongjoong, the leader of of the kpop boygroup ATEEZ, if you bias hongjoong you are one of his butterflies now :D
by yeoxsang November 19, 2020

The young lady's subsequent bowel movement revealed a Brown Butterfly patten on the toilet tissue.
You're a goddamn brown butterfly!
You're a goddamn brown butterfly!
by Dnice456 April 23, 2017

Alisha: Becky, you keep blowing off all the guys tonight!
Becky: I just want to hang with my girls tonight! I feel like being an unsocial butterfly!
Becky: I just want to hang with my girls tonight! I feel like being an unsocial butterfly!
by Notorius Big Ole D September 14, 2016

We all love cuddling somebody before we go to sleep, but when you actually pass out, it's time to go ass-to-ass, and take over your separate sides. From above, you look like a butterfly!
by lmaohilarious1993 October 28, 2015

by SporaticWisdom November 11, 2009

When a lady is lying nude on her back, legs in the air, and the gentleman politely rubs his bare manhood along the outside of her who-ha until he’s finished.
I’d like to master my conversational French, but if I had to choose between speaking it and perfecting the French Butterfly, I’d always prefer the latter.
by Laia Sugarbush May 11, 2018
