A Fink

Someone who continuously makes terrible decisions, but tried to act like they don't care. Ultimately they are consumed with regret and spend more time and resources trying to undo their bad decision.

Greg is the only friend in the group who didn't make reservations to join us for the trip to Mallorca. He said he didn't have time even though he's got the most time. Now he just paid twice as much for a last minute ticket. Greg pulled "a Fink".