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San Francisco Science Fair

When two dudes get together to have sex, but one fills his asshole with vinegar, and the other covers his dick in baking soda. Upon insertion the baking soda and vinegar will react creating an ass volcano.
"From what I've heard, Kyle and Jake are super gay for eachother"
"They are! I heard they got a 14 inch toy and they've also experimented with the San Francisco Science Fair"
by bakeddeepfriedbeans January 23, 2024
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San Francisco Fedora

San Francisco Fedora is the act of taking a dump on your partners head while having a threesome
Last night I hooked up with that chick and her friend from the club and gave them a San Francisco Fedora
by Sgtkeebler January 27, 2024
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San Francisco Fedora

When you take a crap on someone's head.
Not even the potential payout would force me to admit I let an old man give me a San Francisco Fedora while I suck and fuck multiple guys.
by VinceMcMahonshitonmyhead January 28, 2024
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San Francisco fedora

The act of defacating on a persons head during a sexual encounter so that it drapes across the forehead in the fashion of a small brimmed hat.
Can you believe Vince gave that chick a San Francisco fedora during the threesome?
by Phitsoc Cooper January 31, 2024
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san francisco catfish

Very large and hairy male anus.
All you're going to catch with that chode is a San Francisco catfish.
by A'Louriean February 27, 2024
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San Francisco goldrush

When a guy fucks another guy up the ass and there's another guy semi hard, next to him and he's gotta take a piss and the first guy pulls out and second goes in and pees inside him.
"I like to be peed in, that's my thing. I like a guy to fuck me up the ass and there's another guy semi hard, next to him and he's gotta take a piss and this guy pulls out and HE goes in and pees in me. And uh, it's called a San Francisco Goldrush" - David Cross / Oh, Come On
by ChorlieKittenMittons November 23, 2024
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San Francisco Frisbee

When someone pisses on a dinner plate and freezes it, then throw it through a window of someone’s house and it melts on the floor
“Bro my apartment smells like piss”
“Maybe someone threw a San Francisco Frisbee inside your window”
by EthanSFF March 4, 2024
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