If I were the defense attorney it would be really hard not to continue the bullying when the kid got on the stand:
Defense Counsel: You say you knew there was semen in the drink?
John Doe: Yes, I could taste it.
Defense Counsel: So you'd say you're quite familiar with what semen tastes like, is that correct?
Defense Counsel: Now walk me through what happens at that point. You take the bottle off the top of the locker...
John Doe: Yes I take it off the top of the locker and I start to drink it and then...
Defense Counsel: Do you swallow?
John Doe: Yes, I swallow-
Defense Counsel: I bet you do. (chuckling)
Defense Counsel: Now when you were drinking from the bottle, describe how you were positioned. Is that when you were kneeling?
John Doe: No, I was standing up at the time.
Defense Counsel: Is that the first time you've ever swallowed semen when you weren't on your knees?