(1) To be impolite, unpleasant or rude to one person so that they will be impolite, unpleasant or rude to another.
(2) To make someone unhappy by being a douche to one or all their friends.
I just circumjerked Tom by pissing off his girlfriend. He's not getting any tonight!
Jeff tried to circumjerk me the other day by being an asshole to Michaela, but I know better.