A stinkbag is a fairly unknown variation of the popular "Tea-Bag". Standing over a downed opponent you drop your pants and attempt to stamp your man-purse on the victim's forehead. At the same time you release a cloud of noxious gas otherwise known as a beefer. Congrats, you have successfully completed a stink-bag.
Travis tripped and hit his head on the sidewalk. Kevin stepped forward and skillfully applied a Stink-bag to travis' face. The waft of butt roses in the air and the sight of kevins brain bag caused travis to spew lima beans on the sidewalk.