معنى يفشل

My English lit prof told me he'd fail me next time if I didn't show up with a doctor's note.

There goes Cameron's theory. Oh, God, I hope it's not a vitamin "K" deficiency.

He needs a new liver. We screwed up.

It is in the nature of medicine that you are gonna screw up.

Good news is, if you screw up,

What a loser. Lame.