What you do if another boys semen goes in your mouth do you spit or swallow?

As long as the other boy doesn't have an extremely major sexually transmitted disease, chances are that swallowing it will do no harm. Even if the other boy has a light form of an STD, the chances of it being transferred successfully to you just by swallowing it is extremely slim. In fact, swallowing semen is perfectly sterile and healthy. In fact, it contains proteins and other minerals that are good for you. Although these nutrients are minute, there surely aren't any disadvantages to swallowing semen. So no need to worry if you were forced to drink someone's semen.