My first wife and I had sex in a tent in broad daylight without closing the tent flap. On long trips she would ride in a skirt/dress without panties and lean up against the door with her skirt up and her legs spread and let me see and play with her naked pussy. I have also driven with my pants down and my naked dick out.
I took public transportation, a train home, with my balls in a figure eight strecher, no underwear, with jeans. I also had my entire package held with a rope around it, making me hard. I also had on clover nipple clamps.
I almost chickened out before getting on the train, but I did it. The ride was 20min and my nipples hurt so bad when I finally got off and got to my car. I was hard the whole time.
Ive done some simple bondage stuff. like being tied up and letting her do whatever she wanted and vice versa. Probably my favorite kinky thing so far was getting a blow job while driving down a busy highway. def excellent.
the kinkiest thing i have ever done is have sex in a park in the broad daylight and was fully packed with kids and parents and all anyone could do is stand there and stare at us as we were very much into eachother and take notes on how to do it i guess but when we got done and i looked back there were like 30 people standing around and started applauding us (and of course most of them were men) that was the kinkiest and most exciting time i have ever had.....................
Now here is a question ,I have done so many kinky things over the years .One of the kinkiest I suppose was doing a paper round in the nude when I was in my teens .It was a consequence of a dare from a game of cards with friends I lost the night before .Never one to turn down a dare I did it and got seen but what a rush .