lablamage
You mess up a party or an event so badly it feels like you were paid to ruin it. It can also be something small, like falling down or showing off your junk by accident. You’re a walking embarrassment.
He tried to do a magic trick at a birthday party and accidentally set the cake on fire.
She shouted her crush’s name in the middle of a test.
He tried to be a tough guy and got stuck in a door.