triple helix
Wherein you and your two best friends stand facing away from each other, link arms and squat while turning and dropping a deuce. The resulting action is a helix shaped piece of doodoo. It's best to do this in one of your parents bathtubs as to mark your territory and seal your bond of friendship.
Henry-How did you get to such good friends with Liz and Brian?
Me-We bonded over the triple helix in our freshman year of college.