Dumb Donut

Someone who isn't the brightest. One could even say they have a gap between their ears. They are essentially the opposite of a smart cookie.

Carol: My sister is pregnant and I can't wait for the gender reveal. It's so exciting to find out if I'm going to be an aunt or uncle.

Carl: Oh Carol, you are a dumb donut!

by Sheepherder37 June 5, 2020

dumb donut

a slut who cheats. See "Spare me the Details" by The Offspring.

She's a dumb donut, I can't believe she dit that behind your back.

by Nick June 4, 2004