Some of the memorable edging and orgasm experiences of my life were, bizarrely, brought about by, at the time, my following a lifestyle of detachment and celibacy and "yogic" diet all woven into a community and belief system. If you can believe it, I actually attempted celibacy during my twenties. I was living in Japan at the time, btw.
The way it worked out was like this: I'd be out and about, noticing the beautifully dressed women. I knew I was building up sexual energy when **one glance** at an attractive woman would send a kind of electrical current through my equipment, like a pump priming, building up pressure, not an erection, but a definite charging. The glances would add up! Being in a big city means riding the trains and the subways. Rush hour sometimes puts you in close quarters with nubile fresh smelling maidens. I'd feel a frisson of excitement if, for example, her boob happened into my elbow, or I'd feel her bump against me. If you've seen any groping videos, that's the daily situation for many frustrated men who consume this porn. Well, my inner excitement would start to burn, and I could tell that a few days hence, plus or minus, I would cum, whether I wanted or not! I vividly remember a pair of permanent press brown pants, I had, some synthetic, with a shiny satiny material for what was a generously large pocket liner.
I'd be walking, and literally every step the friction of the material had me on the edge of cumming. More and more desperate for stimulation, I ended up taking the stairs up to my 6th floor apartment, the extra movement with each step finally taking me over the edge. My knees buckled and I creamed in my pants. Then, after a while, the buildup would start again. I think on average, one cycle took about three weeks.
This odd situation continued until I decided the celibacy and all the other baggage wasn't helping me, and that I was actually enjoying this involuntary, inevitable edging to orgasm. This ended in a period of rabbit-like coupling when I finally hooked up with the woman who eventually became my wife.