Sleepover prank gone wrong?

im 14 and me n my crew slept over my place last nite and we saw this video one time of Halo t-bagging and we decided to do it with one of the guys, he had fallen asleep already so we were there and i was t-bagging him and he hugged my leg and started to bite in the middle of my testicles then he kinda hit me with his head on my taint and now it really hurts and i dont know what to tell my dad and mom, i pulled my testicles out so quickly and didnt realize how hard he was biting and now its all flesha nd it rly rly hurts please i dont know what to do or who to tell