1 definition by Schlong Petersons

A Lindahl happens when two men are having sex. One man is bent over and the other is behind doing him in the butt. During the course of vigorous sex the penis slips out of the ass and is accidently thrust forth again hitting the man bent over square in the testicles.

The act of slipping out of the ass and hitting the testicles is called a Lindahl
I am walking funny because my boyfriend accidentaly got me with a Lindahl and my nuts are killing me
by Schlong Petersons October 14, 2009
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