Is result of excessive anal sex, a condition occurs in which the intestines pertrude out of the anal cavity resembling an elephants tunk also know as pink socks
after many hours of an anal gang bang sussie had a severe case of trunk butt
by reliable crew February 5, 2007
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1) When someone mistakes yur butthole for a boner (popularized by the comedian group known as Stella
2) Hemorrhoids
3) Friend's Sofeball Dike's Ex-Girlfriend

"I can feel your hard-on" "No I have trunk butt"
by Laceymaloo August 12, 2007
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The hypothetical "tail" created when an anus goes into extreme prolapse.
Pulling unlubricated anal beads out of someone's rectum too quickly is a good way to give someone a long bloody butt trunk.
by HornedOctolope December 9, 2015
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