Where you put your mouth on someones asshole and start sucking until you eventually suck a fart out of their ass.
I heard that your mom likes to give every guy that shes with an anal vacuum.
by SePhIrOtH6969 May 24, 2006
1 more definition
the act of sucking ones asshole until either a fart or feces comes out.
Jim gave me an anal vacuum last night and it cleared my constipation
by yourmothersuterus69 June 07, 2014