Macduffed - To be made to look like a total idiot; To be proven wrong in

To be made to look like a total idiot; To be proven wrong in the worst way; To be shown up in front of everyone.

My dad said he could fix my phone. He got Macduffed and broke it even more.

I said I could do 10 push-ups. I got Macduffed and could only do 2.

My brother said he could win the game. He got Macduffed and lost by 30 points.