Top definition
When a situation or person does something utterly stupid. And the best way to describe that situation or person, is just to say their dumb like that.
My mom left the keys in her car, because she's dumb like that.
by humanities excuse July 24, 2011
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug