What the hell kind of ad is this!

I wonder what the pitch meeting for this ad was like!?!?

Ad guy: “So, we’ll have this kid, bending over showing off his underwear-clad butt. The kid will have his head turned, peering at us and smiling. And we’ll use the tagline: "Your son can have a lot more fun, when you put his pals behind him!” What do you guys think?“

I never realized NAMBLA was also an advertising company!

Are Funpal briefs still being made? In adult sizes?