Don't feel bad...I have this really bad habit of laughing when someone close to me gets hurt. I know how awful it sounds, it's not that anything is funny it's just how I react. My husband has been hurt twice (nothing life threatening but bad enough for a trip to the ER) and passes kidney stones every 6 months or so and while he's writhing in pain, I just burst out with laughter. Fortunately I haven't done it in the ER or on the rig, I'm hoping it's a reaction soley reserved for him, otherwise I'd probably be fired in a matter of minutes.
And the other day I was at the doc and a medic who worked there part time did my EKG and bloodwork. After I had to flash him for the 12-lead he had to put his vials in my lap for the bloodwork, and being the smartass that I am I HAD to give him a hard time about it. If you don't make light of the awkard situations they'll drive you even more mad than the calls will.