dumbout 

A dude that keeps himself lookin nice, almost with a pretty style, but when things pop off, he can get it poppin thug style as well!

JaRell came into the club lookin fly, but was kicked out after beating that guy for talking shit. He's a dumbout

dumbout by BrandonB UCantBMe October 3, 2007

Dumbnut 

A person who is acting strange, wierd, funny, or just plain dumb.

Wow Lula, you're such a dumbnut.

Dumbnut by Blah! =P Oscar! April 24, 2010

dumbotronic 

when something is so dumb it needs to be emphasized

Katie: Hey guys, I saw a license plate that said "Oklahoma is OK!"

George: Man, you're dumbotronic

dumbotronic by Ymauerq March 15, 2008

dumbbutt 

can be used as a less offensive term for dumbass; a stupid or dumb person.

You're such a freaking dumbbutt!

dumbbutt by Me_Myself_&I April 21, 2009

dumbutt 

An idiot, a butthole, or a stupid person who always messes up.

What a dumbutt!

dumbutt by xXx_The Memester420_xXx February 22, 2017

Dumbnut 

Someone or something who does a stupid mistake

Wow josh forgot his paper what a dumbnut

Dumbnut by Kipperdoodle January 11, 2018

dumb out

To go crazy on something or someone

Man if that hater dont quit runnin his mouth I'm bout to dumb out on him

dumb out by Tha Silencer March 2, 2008