Glass jaws.

[Primo Carnera]

Amir Queen Khan
Frank Bruno
Tommy Hearns
David Price
Audley Harrison

Bruno didn't have a glass jaw. He just didn't know how to react. I think it was the Bonecrauher KO (I might be wrong.) , he just stood on the ropes getting pummelled and never went down. He got hit with loads of shots, just taking them defencelessly. That's not a glass jaw.

Jumbo Cunningham hit him and his legs went to jelly.

Well you just proved yourself wrong!!! He fucking beat Cunningham! That means he came back from being hit to win, so how the fuck does he have a glass jaw?
Come on @erics44 , help me out here!