A Charlie Horse.  Its a old track injury when I popped my hamstring years ago and it recurs when I do it in tight quarters.

of course while riding cowgirl.

It still hurt months later and ended up have surgery to fix the scar tissue that wrapped around a nerve.

No workman's comp here

Karrie-

I pinched a nerve in my lower back, after a hot night of great sex, got up and fell right to the floor in agony It still bothers me today from time to time. And then theres the welts on my back from the sex on the stairs. Elbows and knees all raw, I hate that too...

None! I practice safe sex!

I have a friend and we almost got together, but I could tell pretty quickly that sex for her was a contact sport. I was not the least bit interested.

Does a suck mark on my weenie count?

my two worst were

1) a broken finger on a moonlit romp. it was six months before it started to rehabilitate functionally.

2) a bruised penile ligament. while slamming away it took a U turn off the cervix.

I was showing off on this guy with a huge knob and I overstretched my jaw joint and had to see a dentist and TMJ specialist.
It cost me $6000 but I fully recovered.

Another time I was in a 3some and my body builder friend was using my back to steady himself while doing me doggy and going down on my girlfriend while she was also in doggy in front of me.
My back felt fine until a day or so later when I could barely move.
Apparently I had actually twisted something and had to get a chiropractic adjustment.

My chiro said, "you need to learn to say "no" sometimes' and "the body has limits'. LOL
I told him how it happened and he didn't even charge me for the appt.

We managed to bounce so hard on the mattress that the box spring that fell off the metal platform and then when I walked past it I cut my ankle on the sharp corner.  I had a bad scar for months.

Another time I got a hemotoba on my dick from a gal doing cowgirl so hard, but I always considered that a badge of honor.

One time I was sitting on a chair with a lady  riding my dick. As I was bouncing her put and down with my legs I got a real bad cramp in one of my calf muscles.

From that point on I made sure that I drink plenty of fluids before having an appointment.

i'm just saying....

I have a scar to this day over my left eye

From knocking over a table while fucking on my Mom's living room floor at 19, and having a 10# glass ashtray fall on my head.  

I butterflied it myself and got back to fucking.  

My mom was sleeping upstairs the whole time...

xoM

when I rolled over with an ex girlfriend. Twist goes the knee. It took my 2 weeks to walk without support. But I got sympathy massages and BJ's