I know a lot of non sexual kinks but this one was new for me. :U
it's not my thing but I get it, you are literally wrapping your thighs and crotch on someone's head, but even if I wanted to do it, I can see several logistical issues with that, not just because he is considerably heavier than average, but also his balls are literally the size of his head, I don't think he can comfortably pigback on someone. XD

"this question is almost a month old? why you don't answer them faster?" because I only do it when I'm on the mood and not busy.

questions can be done here: https://curiouscat.live/Danadriel