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The act of pressing ones lips against a transparent surface, typically a glass window, to form a seal and then breathing out to expand the cheeks.

Generally the intention is to disgust or taunt anyone that may be on the other side of the window. Although slightly less offensive, the action is performed in much the same manner as to chuck a browneye.
"Quick, Sally's in her car, do a blowfish on her window!"

"Haha, blowfish!"
by Heath Raftery November 27, 2007
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Feb 23 Word of the Day
The process of searching a building for an empty bathroom. A successful bowl search typically relieves the frustration of uncomftorably defecating around others, although in less frequent cases the desire to urinate alone is a factor. Bowl searching can be done anywhere although it is most prevelant on college campuses.
"In college I did a lot of bowl searching."

"Sam went to the bathroom like 20 minutes ago. Jeez, what's taking so long?"

"He's probably bowl searching."
by A bowl searcher June 06, 2011
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Describes the face a girl makes when you nut in her mouth and it expands her cheeks, making her face resemble that of a blowfish or pufferfish.
Trista offered to suck me off, and that bitch looked like a blowfish when she refused to swallow afterwards.
by DinoCoat October 20, 2018
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When you get a girl to lick your asshole and you fart in her mouth her cheeks puff out like a blowfish.
She was going for the bunghole so I shot her a big blowfish.
by Freebird September 16, 2003
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When you are eating a girl out and she quiefs in your mouth, thus puffing your cheeks out and making you look like a blow fish.
I was munchin' this bitch's clam and she gave me the blow fish of a lifetime; I couldn't get the taste out of my mouth for a month!
by Dongfart January 02, 2006
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A blow job performed under water in a bathtub, pool, or ocean.
Greg: Will you give me a Blow Fish?
Angel: What is that?
Greg: A blow job under water
Angel: Ummm.... NO!
by GJWilliams September 22, 2009
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Getting a blow job while in a hot tub, or any other form of water. To be defined as a blowfish, the girl's head must be completely submurged under water, except to come up for air of course.
Girl: Wow this hot tub is nice.
Blowee: Yeah it is, have you ever given a blowfish?
Girl: No, what's that?
Blowee: I'll show you, here's a snorkle.
by sharkface August 04, 2009
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