Because they are trying to get there balls to drop.
Edit: Lol from the responses it seems like some people don't realize the question was rhetorical, just making a joke at the expense of tbaggers, don't take it too seriously and try to have a laugh, these forums can be pretty negative, myself included, so lets just have some fun.
Edit: I have another question for tbaggers, so if you are tbagging and one of your balls finally drop, but only one, do you have to start tbagging on one leg or off to the side of the other ball?
-
It makes me feel better about my sad, pitiful life.