Laddybuck
A laddybuck is a loose cannon who runs into things, chickens out at the worst times, and acts like he’s never been embarrassed before.
He sprinted into the middle of traffic just to prove he wasn’t scared. He wasn’t. He got hit by a truck. Still wasn’t scared.
He saw a spider and screamed like it was the devil. Then he ran out of the room like he was being chased by a dragon.
He got into a fight with a chicken. He lost. Then he ran away. Classic laddybuck.