Anyways some time later I fired a dart at his stomach nearly point -blank but he jumped up, causing the dart to hit him clean in the ballsack.

My mom heard his wails of pain and arrived there, telling him to his pants at least so she could move his underwear a little and see how badly he was hurt.
Of course, for obvious reasons, he resisted but he wasn't able to put up much of a fight given the pain he was in, and my mom slid his pants down to his knees and couldn't help but let out a giggle when faced with his naked dick and balls in all their glory.
She did check his balls for any serious damage (which involved a lot of touching his ballsack

Of course the poor guy got semi hard too with all the contact but it was ignored because it wasn't even close to a full blown erection .
My mom ended up clicking a picture of him lying there nude and sent it to his mother.
At first his mother was concerned but after she was assured it was nothing serious, both of them found it hilarious that his choice of not wearing underwear on that particular day cost him heavily

Anyways his mom arrived at our house shortly after and pranked him by taking his pants away and saying that the ointment had to be exposed to the air (even though he was perfectly fine now)
It was a hilarious sight to play with my friend and see his dick and balls jiggling all over the place although he seemed to get used to it after an hour or so.
They left about 2 hours later, making him dash to the car naked without covering for no reason other than it being hilarious.

P.S: I later found out his mom used to send my mom pictures of the poor guy naked for a couple years and they discussed them and laughed about it which I thought was hilarious:D
Unfortunately later found out the whole " send a naked picture of your son to laugh about" thing was two way, and I had been seen naked just as often as he was

The last time it happened was at 16, although I suspect that It may have happened after that too, but my mother simply didn't tell me because she knew I would be super embarassed