Injuries that have prevented you from riding?

[derf]

I broke my collar bone, that kept me off the bike for almost a month, and another 2 weeks before I could do anything other than a very short trip.

Broke my hand earlier this year, wore a cast for 2 weeks then drove down to deals gap to meet a bunch of idiots and did a little riding there.

The other day I got a paper cut that hurt pretty bad, and made me suck on the skin where I got the cut until it stopped hurting enough to wear my gloves.

I had my balls snipped a few years ago and that took almost a month before I was brave enough to ride the bike before the stiches were fully disolved.