The Butterfly Effect

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!"

by The soggy tomato February 19, 2018

Iron Butterfly

A girl who appears meek and submissive, but is actually dominant and assertive once she has her partner in a compromising position.

The opposite of a paper tiger.

Watch out for that girl, I heard she's an Iron Butterfly. My friend thought she was a sub, but she had him by the balls once his guard was down.

by Lauren lpsum August 3, 2023

Twilight Butterfly

An AU for the television show: Star vs the forces of evil, which premiers on Disney XD. Twilight Butterfly is a fan-made character who is supposed to the daughter of the protagonist; Star Butterfly.

Did you hear of the fan-character called Twilight Butterfly?

by 10YearoldPornstar September 16, 2017

Folsom Butterfly

the act of fellatio in which both hands twist on the shaft of the penis and the mouth sucks on the head and remaining shaft of the penis. this creates a butterfly effect with the elbows.

My girlfriend gave me a blowjob last night. She even did the Folsom Butterfly.

by LtGenKarni May 6, 2019

Butterfly Homie

a friend who comes in and out of your life often kind of like a butterfly always flitting from flower to flower.

"Nah Natasha and I don't hang out a lot, she's more like my butterfly homie."

by In Sync August 24, 2014

Butterfly Simp

Someone who makes an urban dictionary post about a "private social butterfly"

Damn bro juans a butterfly simp

by Toyota_thot December 26, 2020

Butterfly affect

When the small of a woman’s back joins her butt in perfect harmony to create the silhouette of a butterfly

Bubble, so what,heart shaped, nice but Tiffany has that butterfly affect going on and it’s so fine!

by Monte Carlo 84 June 6, 2018