The act of inserting some sort of baton i.e.
drumstick, chopstick, dildo etc. etc.
up your arse, leaving a good length sticking out. Your opponent does the same and you hit each others baton with your own to make you opponents fall out.
The first one to lose his/her baton is the loser, allowing the winner to run his baton under the loser's nose getting a good whiff.