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When a guy inhales as deeply as he can and flexes his muscles to seem bigger. It's usually done to seem more impressive in a photograph, but sometimes as an attempt to scare away a rival male.
Guy 1: "I was going to kick that nerdy guy's ass, but he took off his shirt and was buff."

Guy 2: "He was doing the Pufferfish."
by Gory Spirit March 11, 2011
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While a girl is being eaten out, she will queef into her sexual partner's mouth, which in turn fill's up the partner's cheeks to create the appearance of a puffer fish.
Oh bro, I totally got puffer fished by Linda last night!!
by Broheiman Foster February 20, 2011
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A person who places their open mouth around the anus of their partner and creates an air tight seal and allows their partner to fart in their mouth causing their cheeks to puff up like a puffer fish.
That girl's ass is so beautiful, I would let her make me a puffer fish just to see what she tasted like.....
by my anus itches October 21, 2009
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The act of placing one's mouth on an uncircumcised penis and blowing air into the space between the glans and the foreskin causing it to quickly "puff out" like a puffer fish.
Two things were remarkable when I posed the idea of the "puffer fish" to my girlfriend: First, that she was not only willing, but downright excited to do so. Second, it worked even better that I had hypothesized, and it felt AWESOME.
by Steve Turbo(the original) February 18, 2010
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A guy who is full of hot air and lies. he spends all his time puffin himself up so he looks bigger and more important than he really is.
That Puffer Fish keeps telling me he works with lawyers to try and scare me...I know he is broke.
by EdibleViolas September 06, 2011
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A males unshaved genital area. The male has not shaved for quite some time now and his pubic hair is long and puffy.
Samantha: Did you go down on Kyle ?
Nicole: he wanted me to, and i was down. However when i pulled down his pants i saw a puffer fish and totally freaked!
by Dj AF May 24, 2010
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An obnoxious, self-entitled, troll-like person.
Oh no, the pufferfish is tagging along with Kambiz after hiding in his trunk.
by Friggin' genius May 01, 2009
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