My wife is very much into both of us having sexual gratification in our marriage. Using toys solo and during sex, masterbating when needed, things of that nature.

Along these lines, I'll end up jerking off if we are hanging out on the couch together, in bed, etc. She's love it when I play with myself - this is where the kink comes in.

Lately, while rubbing one out she will be asking my questions about my technique and what I enjoy. She'll sit up in bed or across from me and cross her legs. When I cum she critique my load if it's not a lot and ask if I blew a load already that day. If there is a lot she'll act impressed. Sometimes, "remind" me that I need to rub one out to keep health and she'll ask to "supervise"

I have no idea where this came from but I LOVE it. I love feeling like an observational for her.

I also have no idea if this is a kink or what kind of kink it is, but I know she loves it.