eating one's vegetables
Being forced to do something super nasty because you acted like a total f***ing idiot. This could mean butt sex, eating cum, having your hands up your backside, or getting peed on by a guy with a golden helmet.
He had to eat his vegetables after he told his teacher to go f*** herself.
She had to eat her vegetables because she insulted the principal in front of the whole school.
He got forced to eat his vegetables because he called his mom a total f***ing idiot.