When one person moons another through a glass window but puts their anus against the glass and farts. Similar to a blowfish but using the anus instead of the mouth.
by JtownMowtown November 07, 2019
An anal blowfish occurs by putting your gasey partner on all fours, begin tonguing the anus until your partner farts into your mouth causing a firm puffing of the mouth cheeks - resulting in an anal blowfish.
My partner and I enjoyed anal blowfish last night!
by D Bird November 22, 2017