Ha!! I remember when i was in college we had a buddy who was a real whiner!! Alwasy crying about something. SO one day he comes in my room and there were 4 of us in there. He starts whining about how this pimple on his back was hurting real bad. So his dumb self decideds to pull up his shirt and show us. hahah. Thats all it took. We jumped him pinned him down, and as he screamed like a little girl we popped that zit on his back till there was nothing left. It was hilarious, just to hear his screaming, not to mention a good pop!! haha!
I heard the zits on the back are a bit sore, but you made me laugh with your story, i don't think he would have had any bad feelings towards you and friends since you guys popped it.