The result of over-enthusiastic weight training or body-building. When you just had to do that extra rep at 250 pounds but should have known better, and pop your shoulder out of its socket as a result.
Jason: "No. I'm OK! I can do one more rep!"
Pete: "Jason, that's 36 stone you're pressing!
Jason: "I'm OK! I can do it. Hnnnnnggghhhhahhhhrrrgggg!"
Pete: "What ? What's the matter???!!!!??"
Jason: "Sheeee-it! My shoulders!"
Pete: "That's the way to pop a socket!"
When a man falls asleep with his penis tucked inhis asshole, While he is asleep he has a wet dream and ejaculates in his own asshole, over night it drys up and doesn't allow him to free his penis.