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The post-anal-sex act of placing a straw in your partners anus and sucking out the mixture usually consisting of (but not limited to) semen, fecal matter, blood, sweat, etc. Generally used in the homosexual sub-culture but has recently popped up on the radar in the straight community.
After I got through pumping (and blowing my load in) gary's stink star, I put a straw in and enjoyed me some good ol' BUTT SHAKE!!
by joeydoyc September 12, 2011