A person that is so dumb that they usually are an ass trying to say that ther are right.
Person 1:Monster is the Devil's drink because the logo means 666 in Hebrew.
person 2: no it's just an M
Person 1:no you are all going to Hell
Person 2: you're a dumbass.
Someone who looks up dumbass in the urban dictionary
If you searched dumbass in the urban dictionary you are one.
If you are reading this, you are a dumbass.
Literally everyone on twitter is a dumbass.
Someone who puts milk before cereal
John: that guys a dumbass
Jake: why?
John: because he put the milk first in his cereal
Someone who puts milk before cereal
“Hey why is Dylan pouring the milk before the cereal”
“ because Dylan’s a fucking dumbass