An STD that causes men to jizz caterpillar eggs. The eggs later hatch and the butterflies fly out of the vagina.
"Hey Samantha, why are you going to the doctor?"
"I think Brad gave me the butterfly effect, I've got butterflies in my stomach!"
"I think Brad gave me the butterfly effect, I've got butterflies in my stomach!"
by The soggy tomato February 19, 2018

An exaggeration of the butterfly effect. Used when someone is responding strongly to a meaningless event.
by Eric MacKay December 22, 2020

Someone who is the opposite of a catfish. Pretty in person but present themself worse on social media or in photos.
by Jay022 May 5, 2023

by Toyota_thot December 26, 2020

A pro Critical Ops player with high reaction and high gamesense. He is to complete rank and scrims by carrying his team until his back hurts. He mostly party to play rank instead of solo ranking, to avoid toxic, garbage team. Suggest that you should party with Butterfly to help you win in ranks.
by qt molly August 22, 2020

"How was your time with that guy last night?"
"Oh it was amazing he gave me so many Australian butterflies. I got so wet"
"Oh it was amazing he gave me so many Australian butterflies. I got so wet"
by $-money the dinosaur January 15, 2014

Guy is required to insert penis between girls legs as she flaps them together violently, as it beats the hell out of the mans weiner, and by chance causinghim to sperm on her chesticles, and have her yell, "The Flapping Butterfly!"
by poo inator February 1, 2006
