Nice. I find pulling my zipper down an inch or so and pulling out my cock head is great for my partner to do the one finger trick. It's my thing for public settings.
Even through clothes. My wife got me hard rubbing my cock under a table in a restaurant and then put her finger on my frenulum softly touching it until i exploded in my pants and walked out with a huge cum spot.
Nothing i enjoy more than sucking a man off to orgasm that cums SO easily like this guy does! I love keeping him right on the edge, then just take his penis full shaft, balls deep, and letting him groan and ejaculate full in my mouth!