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The act of inserting a drug(most common with Meth, Heroin and Alcohol)inside the rectum in order to experience a more intense 'rush' or high
"Dude, Cody just booty blasted half a gram!"
"You were booty blasting that shit?"
"Booty blasting is just taking it way too far."
by UgglyAssMotherfucker November 09, 2015
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