Top Definition
A reduced IQ that is the result of having smoked marijuana the night before. Similar to a hangover, but not unpleasant.
Sorry I'm acting really stupid this morning; I smoked last night and I have a dumbover.
by squeeky! January 21, 2007

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×