Chimmy Shimmy

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!