A rainbow in the underwear
A rainbow in the underwear happens when a man’s underpants are covered in three different kinds of mess like poop, pee, and something that looks like a melted cheeseburger.
My mom’s boyfriend had a rainbow in the underwear after a night of drinking and eating pizza.
I walked in on my dad and he had a rainbow in the underwear and a coffee stain on his shirt.
My cousin’s underpants looked like they had been through a war.