acicadasings, did it ever occur to you that the reason men and women joke about nailing underage kids is to release the tension they feel when they realize that they find someone under-age sexually attractive?
Welcome to life. Do you know what’s worse than being a teenager and having some lecherous old fart lust after you? Being an old fart and having some teenager lust after you! Why is this worse? Because even if you’re not tempted by the teenager, you have to tread delicately around not only his/her feelings, but also around others who might suspect that you’ve decided to act on those feelings!
And this may come as a shock to you, but humans cannot selectively choose who is and isn’t attracted to them. It would be nice if we could, but we can’t.
So Sofa admits that a trainload of teenage girls got him all hot and bothered? Where’s the harm in that? There isn’t any. Hell I’d be willing to bet that at least some of those girls got excited at the thought that on old fart like Sofa would find them attractive.
A few years ago, I met my best friend’s daughter when she was sixteen. It was a hot summer day and she was wearing shorts, a T-shirt and dark sunglasses. Nothing Britney Spears level, but certainly revealing enough to know that she was advertising. She kept looking at me and smiling, like she knew she was getting me all hot and bothered (which she was). I was respectful to her, and chatted politely with her for the time I was there. When I later saw her father (my best friend) I told him, “Gary, if she wasn’t your daughter, I’d fuck the hell out of her!” He got the biggest shit-eating grin on his face you ever saw. 
She’s nineteen now, and doesn’t have any interest in me as she’s found that she can get guys her own age as wound up as she got (and still gets) me.
Truth to tell, its not at all oogy for an adult to find a teenager attractive, its perfectly natural. What is oogy is when the adult acts upon those feelings with someone who’s incapable of understanding what it all means.