a person who acts like he/she dont know shit bitch.
Your a dumbfuck, jason. Stupid bitch.
A name your friend calls you when you know the anwser to a question and make it seem like you don't.
K: What's 2+2
C: 5
K: Your such a 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!'
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!
Probs named lawson and got a small d*ck
“Hey u know Lawson?”
“Yeah didn’t he get with a freshman?”
“What a dumbfuck”