look up any word, like blumpkin:
 
1.
Slowly inserting your penis into a woman's anal cavity all the way until your penis disappears. With a quick, swift motion, you pull your penis out AS FAST AS POSSIBLE and the woman's butthole comes out a bit, resembling a butterfly
As i got my anal fuck on, my girls dad walked in resulting in my girl's butthole getting butterflied
by BusterxCherry August 23, 2010
 
2.
when a guy squanders an obvious oppurtunity to score because he's such a pansy
kappers had this hot girl all horny in his bed, but he butterflied the chance away. what a pussy.
by matt paluta April 24, 2005
 
3.
When a really horny guy eats a girls pussy
last night i took that hot girl from 11th street and butterflied her good.
by hannah June 14, 2006