'fse' is a phrase used when you just witnessed a funny moment, or watched a funny video.

It means: funniest shit ever.

It is often used by teens online.

It is a phrase too awkward to say in real life though.
person 1 - "HAHHAHHAHAHA I"m crying because that was so funny! I'm dying of laughter"

person 2 - "dude, seriously? just say fse. Because that was the fse."
by pwhhaynes January 28, 2018
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Fuck. Shower. Eat.

the usual order when casually having intercourse with a friend or significant fuck buddy.
Yesterday, me and Victoria were right on cue, it was like in and out FSE
by Mister Wetbutt June 23, 2010
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