ka-doink, boink
A loud, stupid word you use when someone is so dumb they’re like a walking mistake. You might even make them eat a whole pizza if they keep it up.
My brother said, 'I can’t believe I lost my keys.' I boink-ed him and said, 'You’re a walking mistake.'
My sister said, 'I can’t believe I wore my shoes inside out.' I boink-ed her and made her eat a whole pizza.
My dog said, 'I can’t believe I ate my shoe.' I boink-ed him and gave him a time-out.