Our daft ways will eventually lead to our self destruction.

That went right over my head. I must be daft.

"Dude! Like, I'm gonna jump off that bridge!"
"You're daft."

Person 1: Daft means stupid
Person 2: Oh.. So stupid Punk?
Person 1: You're daft

The people that voted for Rick Scott as the governor of Florida are D.A.F.T.

Stan is so daft, he saw an ad in the paper for a parachute-"Only used once, never opened, small stain."-that he wondered out aloud if it opens on impact.

Person 1: What was the maths homework?
Person 2: ARE YOU FLIPPING DAFT!?!?!