A state of hangover in which one is shitting and puking at the same time
Hey man are you ok I think your roosting pretty hard!
by Jeff272 March 18, 2017
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1. When a group of (often dolled up) females congregate for a photo opportunity.
2. When a female engages excessively in the aforementioned behavior.
"Look at Sheila's timeline on Facebook... she's roostin' it in every single photo! Man! she must be really popular!"

"Sheila? She's kind of like a female version of a "bro." She's always roostin' it at Starbucks with the rest of the plastics..."
by Ammar Rai_ June 23, 2013
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a rooster smokin League of Legends/WOW/Starcraft constantly. may include yelling of sorts, grunting and possible seizures.
Man, you hear that rooster roostin last night?
Yeah goon, he was roostin hard...I think he almost laid an egg.
by Goonzsta March 8, 2011
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