First ejaculation can be traumatic if you don't teach your boys about it.
The first time a boy ejaculates it can be traumatic especially if nobody has told him it's supposed to happen. This happened to me as I equated ejaculation only with sex and sperm only with sex as nowhere in my sex education lessons did anyone tell me otherwise.
When I learned to play with my dick I always rubbed the shaft unlubricated and completely dry (as rubbing the head though circumcised was too intense) one night I felt something come out in tiny drops that felt like pee. Clearly it wasn't. This went on for a few weeks.
Then one night I had a massive orgasm and a ton of yellow liquid squirted out. Being 12 and not knowing any better I thought I had destroyed my penis completely. But seeing as it was still there and I could pee out of it later--I figured I hadn't. But what had happened?
My underwear were soaked so I went and hid them in the laundry room hoping nobody would notice. Sure enough mom did and send my dad to talk to me. He explained what happened and that it was normal and to use Kleenex to clean up and only do this in my room or the bathroom.
I was mortified about this and didn't touch my penis for months. I didn't even want to touch it to piss. It took a long time to consider masturbating again. But I overcame that he he.
I just want to post this here to encourage fathers to talk to their sons about masturbation and ejaculation as being normal or for mom's to do it if they're in the position. There's a lot they don't teach kids in sex-ed and they really do skirt over the issues of masturbation.