the equivalent to "pulling a steve timmons", its when you pull your pants down and try to take a shit outside, but miss the ground and shit in your pants horribly... out of the kabillion miles of the earth, how the hell do you miss the ground?

the whale tail is the shape formed when a g-string rides up high over a womans trousers

Steve Timmons is Sir Shits A Lot

in addition, you must wear someone else's dirty, jizzy pants all night after. after that mission complete.