Anyone who has a red hair color specifically on their balls
Look at the ball hair on that dumbfuck ape
An extremely stupid and ignorant individual
The governor of Texas is a real dumbfuck!
when someone does something really stupid, thats what you call them
Natasha, 'OMG JORDAN JUST TRIPPED OVER HER BAG!'
Kate, ' Haha... what a dumbfuck!'
Dumb fuck - (noun) someone doing something really fucking stupid.
Dumb fuck - (verb) when an action someone is or is about to do is really fucking stupid.
Kelsey - “I’m going to cut myself bangs.”
Ty - “No, that’s too dumbfuck.”
Usually has something to do with a person named Calvin or any other person with the letter 'C' as their first intial
Me: Oh hey Dumbfuck!
Some random: Don't you mean Calvin?
Me: No, hey Dumbfuck!
Calvin (dumbfuck): Hey man!