like a jo

When you do something waaaaay too stupid, not just regular stupid, or blonde stupid. You did that act of stupid, like a Jo.

Person: wow I tried to get out of the car without unbuckling my seatbelt. Like a Jo.

Sara: hey I'm Sara
Person 2: hi I'm..... I'm....
Sara: did you just forget your name?
Person 2: yep, like a Jo