Milhouse stands at the left edge of a wooden beam, while Bart in an orange jumpsuit, an unnamed redheaded boy, a tall boy with a brown mop of hair…

What happens

Milhouse, with blue hair and glasses, stands at the left edge of a wooden beam, while Bart in an orange jumpsuit, an unnamed redheaded boy, a tall boy with a brown mop of hair, and Lisa in a matching orange jumpsuit stand beside him, all splattered with mud against a blue globe-like backdrop with mud spatters on the wall behind them. Bart and the redhead square off and bicker, then Bart raises a fist, and soon the kids are all cheering with fists in the air, Lisa and the tall boy shouting with their arms raised, while Milhouse and the redhead join in with raised arms. The beam sits above green bushes, and the mud-covered jumpsuits and a long dark spatter pattern are the main details.

Written by an AI model from frames of this moment, so small details can be off.