Throwing a party or celebrating an event before it is appropriate. Most often done in an effort to fit the schedule of someone other than the party honoree.

When you eat dirt for the first time and leave your family to build a shack in the woods

golf term: The use of any celebratory action (ie. fist pump, raised arm, verbal comment etc.) assuming a putt will go into the hole before the ball actually enters the hole thus causing the ball to miss. Very mysterious phenomenon which plagues golfers.