That's funny. Never happened to me something like thisI have dropped the whole camera bag when I got it out of my car. Nothing happened.
I have dropped a kit lens, from a table height. Nothing happened.
I have gotten glitter on my zoom lens. (don't ask me how, don't ask me why) Nothing happened.
Worst case scenario is that the internal elements of the lens move and the lens becomes uncalibrated.
Worst worst case scenario is that the front element gets broken, but you could still use the lens with an artistic effect.