Its rare, it happened more like 20 years ago. The biggest blue ball mistake I ever made was driving home from out of town it was a 2 hour drive and I just got hard thinking about coming home to my wife and having sex, it had been days and we were both young still so I got really worked up and had to release myself in the car. I draped my sweatshirt over my erection as I drove down the highway and dry jerked for the whole 2 hours, it never really went down and I kept at it. By the time I got home precum was literally pouring out of me. I didn't tell my wife what I did, but wanted her to fuck me right then and there and get rid of everything I just built up! I thought I'd be fine waiting till later that night, I only had dinner and a few hours to go, but I had blue balls the second I walked in the door and my balls felt like super sore things attached to my body that I didn't want anymore. Oh man my stomach hurt soooooooo bad, I actually tried to poop to relieve the inflammation and discomfort, but it did nothing. Cumming later was a relief, but mentally more than physically. My wife didn't know I did that to myself and said "wow, well if you do that again just go release it when you get home and don't hurt yourself!" I still had residual discomfort and ache until noon the following day.