MCR QUESTION!!! please answer!

Well, I've heard many times that Bert McCracken is featured in the song You Know What They Do To Guys Like Us In Prison. Now after hearing this, I figured the only part that really sounds like him is the giggle at the end. Is that him? Or is that Gee?

And if that part isn't him, the only other thing I can think of is the screaming in the background, but I thought that was Frank!

I'm extremely confused!

So if anyone could clear this up for me, I thank you. :)