The act of a man or boy of having a boner
a fire hydrant is an inside joke used between my friends.... meaning when a fugly guy sees a hot woman (us) and gets the urge to come and fuck us getting a boner.
by Brosephine kasberger January 23, 2017
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During sexual intercorse you piss and nut in the chicks ear.
Ya she still can't hear her boyfriend decided to pull a reverse fire hydrant on her.
by Cripple420 December 12, 2019
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FYI, fire hydrant chic is Gigi’s bottom line concern when you bring home the next “super cute” but highly embarrassing freak-wear costume from Petco or PetSmart.
by Dr Bunnygirl September 27, 2019
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When a high wasted midget wears red pants and have a big ass.
SNL skit with Bill Hader and Seth Myers where Stefon says a club Twice has thought of everything including human fire hydrants
by KIDKIDOOO April 25, 2010
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A person who's going on and on about a subject they're interested in, not letting others get a word in edgewise. By spewing a constant stream of information, they become the human equivalent of an open fire hydrant.
Jeez, Jon, you haven't stopped talking about 3D printing all night; you're being a real verbal fire hydrant!
by TheJanePlane June 01, 2015
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When you have a facebook account and someone, usually a signifcant other, or someone that wants to be held in a higher postion in your pecking order feels the need to post, like, or make comments on your facebook page constantly in order to "mark their territory".

Akin to a dog "marking his/her territory" like a fire hydrant with urine.
Dennis: "I hung out with Shannon the other weekend and we had a good time."

Dennis: "But, she's left several comments and posts on my facebook page since then, it's kind of annoying."

Jeremy: "Archetypal facebook fire hydrant my friend..."
by Timothy Wizard Tebow December 15, 2011
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When a man releases a massive amount of cum on a woman’s body making their dick like a broken fire hydrant when they cumshot a woman
I was fucking yo bitch last night and gave her the good old fire hydrant
by RealNiggaaa69 May 14, 2019
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