gacid

Flatulence caused by ingesting lysergic acid diethylamide, otherwise know as LSD or acid. Acid farts. NOFXacidfartfarting giftdose
Erik had gacid again, so we had to ride with the van windows down after Topeka.
by Jerry Paper June 10, 2016
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Gacid Trip

The act of playing Gary's Mod as a substitute to tripping on acid or playing while on acid.
Guy 1:
My brother Gacid Trips to some weird dancing guy with a briefcase, a traffic cone on his head, and a couple of headcrabs playing twister with a Hello Kitty doll and a bazooka while submerged in apple sauce suspended 10,000 ft in the air shortly before a ROFLcopter did a barrel roll and annihilates his character.

Guy 2: He's gonna be a virgin forever.
by Liberator13th March 18, 2009
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gacidity

A deadly combination of gas and acidity.
I just ate a jalapeno chipotle. Get ready for a gacidity bomb.
by trinitro June 12, 2012
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