A situation where there are alot more females than males. Not always a bad thing. It's the female equivalant of a sausage fest. The name refers to the female reproductive organ known as a vagina or butterfly.
Unfavorable

Nikki: I'm gonna head down to The Stratus Club and find some guy to hook up with.

Callie: NO! Never go down there.

Nikki: Why?

Callie: Because, its always a total butterfly swarm. You would be lucky to even see a guy there.

Favorable

Nico: I'm gonna go try to pick up some girl at Stratus

Calvin: My boy was just there and he said its a total butterfly swarm.

Nico:..............NICE! Thanks for the tip bro.
by It Was Written July 06, 2010
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He is an evil prostitute that lives in bois pants, writes death threats and is a cannibal
by Lucinda is Lit July 18, 2020
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When 2 people spread their butt cheeks and press their balloon knots as close together as they can and then fart simultaneously.
I missed Todd so much I gave him a butthole butterfly kiss.
by Urban cowpuncher June 08, 2021
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when u are feeling blue butterflies is being calm and not having a damn worry about anything, all u want to do is chill, injoy every second slowly, not caring about anything around u, being in ur own world and there is no one in it inless u want them to be and everything feeling like its 3x slower and it feels like ur flouting in space well dying but it feels good at the same time
"yo dude i was so blue butterflysed last night on that lean last night"
"im having some blue butterflies naturaly" blue butterfly feeling
by ijustknowthatsall June 07, 2021
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A moment of mid-sentence distraction.
Person 1: "So I was watching- Oh! A penny!"
Person 2: "Nice Blue Butterfly Moment."
by MatrixFoxDemon October 02, 2013
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