I got the following link from a fellow member of the VSFW forum. It is from a video blog of a girl who's enrolled in "my free implants", which basically is about girls competing to get free implants.

She receives an email from a guy asking about ballbusting, particularly whether she thinks its funny, does she do it, and what's the best way.

Her response is real, and is very interesting (15 MB):

http://rapidshare.com/files/17122170...e_implants.mp4

Following is a video capture of it such that others will know if they've already seen it. Note the email questions she was asked: