earmuffs
A loud yell from a parent telling a kid to cover their ears because the parent is about to drop an F-bomb so strong it could knock the kid out.
Mom: 'Cover your ears, I’m about to say the worst thing I’ve ever said.'
Dad yells, 'Earmuffs!' while spitting out a mouthful of cuss words.
Brother shouts 'Earmuffs!' just before he starts screaming about his failed math test.