Ol goofy!

A phrase directed at someone who does something STOOPID.

Alpha: Yooo broo, I'm gonna study so hard for this Physics test. On my mama I'm gonna finesse this test.

Patrick: Ight bro
… a week after the Physics test
Patrick: Sweet I got an A- on the Physics test. Yo Alpha what did you get?
Alpha: I'm blown! I got a D+ !
Patrick: Ol goofy!