The clenched butt cheek walk/run one finds themselves making to reach the nearest toilet before raining a gush of explosive diarrhea in their pants after eating too many chimichangas (or even one funky one).
Got drunk last night and ate 3 chimichangas. Seemed smart at the time, but woke up this morning with the Chimmy Shimmy. Damn near crapped myself!
When two men get boners, touch tips, walk towards each other until their dicks flip up touching their stomaches, and rub against each other until fellatio.