When a girl stands above her partners chest, squats down, has a bowel movement in the mouth of the partner all while pulling her arms up and down maintaining an L position to represent the pulling of a train horn. The partner in most instances usually makes a train horn like noise after she "pulls the horn".
Wow, me and sandy dow'mecock sure had a crazy night. After doing it, me and her did a poo doo ma choochoo in my grandmothers bed...
by SkeeJay intusvajijay October 24, 2008
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