The title of this article is a conjectural. Though the topic is found within The Simpsons universe, a proper name is not available.
―Man Underneath Bowling Alley

Man Underneath Bowling Alley is a man that was underneath Barney's Bowlarama when Homer scored 300 points in a bowling game. After Homer scored the 300 points, he threw down his bowling ball really hard, breaking the floor and falling onto the man's head.