A word to describe something that is as powerful as it is fragile.
Man is a glass hammer, powerful beyond compare but fleshy and destructible.
A blunt and useless tool.
Ideal insult for the stupid (and jocks), as they will be shaking their heads and overworking their 2-cell brain to figure out why everyone is laughing at them.
Guy: "Dude, you're a glass hammer"
Jock: *puzzled expression* "Huh?"