Top definition
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!
Carl: Oh Carol, you are a dumb donut!
by Sheepherder37 June 04, 2020
Aug 10 Word of the Day
Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.
by Another damn hippie. May 09, 2018