Whore tipping is a sport similar to cow-tipping, but it is specifically practiced on college campuses, at nightclubs, bars, or any other place where one might find large groups of scantily dressed drunk girls wearing 6inch heels.
The sport involves going out to these locations, and casually bumping, tripping, or pushing the drunk girls and watching them try to get back up while drunk.
The sport is practiced for the enjoyment of the pusher, but must be exercised with caution: beware of belligerent male friends on the lookout for any reason to start a fight. These males are typically drunk beyond any sort of reasonable limit, and find the need to punch things for no reason. These fine gentlemen will not appreciate their biddie (whatever her name was) being pushed over, and will feel the need to fight for her honor (even though he doesn't know her name). Consider yourself warned.
Tipper 1: "Looks like the biddies are out in full force tonight!"
Tipper 2: "Perfect whore-tipping conditions, no one will even notice if you knock a couple over..."