She was trying to keep her creditors at bay by 'robbing Peter to pay Paul'. [=using one credit card to make the payments on another credit card]
Their romantic relationship 'petered out' after the summer.
Interest in the sport is beginning to 'peter out'.
(..) come from TeXas, Private Cowboy. And you don't much look like a steer to me, so that kind of narrows it down. -Do you suck dicks?. -Sir, no, sir. -Are you a peter puffer?. -Sir, no, sir. I'll bet you would fuck a person in the ass... ...and not even have the goddamn common (..)1987 Full Metal Jacket