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boob flex 

When a woman (usually with big breasts) can make them move at will. It can be extremely sexy, is often done as a party trick (or to try to seduce a guy) in a low-cut top, and hypnotizes all straight guys.

For some women, only the pec muscles move and the boobs jiggle a bit, but on the most impressive boob flexers, the entire breast can lift up and "wave" from the bottom. It can be done one breast at a time, both at the same time, or alternating.

Women in the 18-30 age group can often be seen boob flexing to music to keep the beat. Some can do the move extremely fast. Sometimes women do it subconsciously.

Boob flexing is more impressive than a guy flexing his pecs, especially when a woman's breasts are large. Big, perky breasts actually seem to be more easily flexed and in fact can often appear to defy gravity despite weighing several pounds.

It has become a very popular performance trick in the last decade, probably because a lot if women work out with weights these days. How it got into mainstream culture is debatable but it appears it was first seen on MTV in the Room Raiders" show in the early 2000s. It has also been seen around that time on the show "Blind Date". There are tons of youtube videos.

This move is often performed along with booty twerking. Most likely, the fact that so many women workout with weights as time goes on, has a lot to do with the fact that more and more women can flex their boobs at will.
Did you see that girl's boob flex? It jumped up while she was talking with me. She must like me.
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boob flexing 

A woman who can lift flex her boobs WITHOUT the use of her hands or a bra.

Kevin: "hey jack."
Jack: "what ?"

Kevin: "Laura is inside doing some MAJOR boob flexing. She's really good at it !"

Jack: "God bless America"
boob flexing by The Paradox March 18, 2008
Related Words

boob flexer 

the act of tearing a muscle in the breaticle region...
sarah: damn u played with those tities so much that i got a boob flexer
me: HEY FUCK OFF U!, dont tell me i gave u a boob flexer...chunt
boob flexer by elemeno-p1 June 23, 2008

Hair spider

A tight, tangled knot of loose hair and lint that forms inside clothing during the clothes dryer cycle. It typically hides inside garments, causing an annoying lump or a phantom tickling sensation against the skin until it is found or falls out onto the floor during folding.
I was folding my clothes and a huge hair spider fell out onto my hand
Hair spider by Kmorsels July 15, 2026
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n. A screenshot fabricated by a company to misrepresent the graphics of a game; a combination of the words bullshit and screenshot.

Originated from Penny Arcade, a popular gaming webcomic.
-Have you seen Madden 2006 for the Xbox 360? The graphics are gonna be awesome!
-Dude, the Madden 2006 images they showed at E3 were bullshots. It doesn't look nearly as good as they said.
bullshot by Worker Unit #503,298,545 September 26, 2005
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Gayborhood 

N. A neighborhood containing homes, clubs, bars, restaurants, and other places of business and entertainment that cater to homosexuals.
"They've opened up a new club in the Gayborhood called the Male Box."
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A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."
kenlet by Norma Y. October 8, 2005
Word of the Day on July 13, 2026