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When a male or female puts their lips around the butthole of another male or female and then starts breathing in his/her farts but doesn't exhale, eventually passing out for a brief moment. (works best if they have gas & you sit on their face)
John: What did you & Mary do last night?
Jim: I gave her some Dirty Anesthesia,she passed out for like 2 minutes
John: Nice!
by Young Nigga7069 October 09, 2013
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