The quickest happened without a partner and without me touching my dick. I always have had a thing for wrestling singlets. A number of years ago I was in the best shape of my life and decided I would buy one and wear it to the gym. I had worn Lycra running shorts and a t-shirt at the gym, but felt almost nude in a singlet.
I was working out on the circuit training machines and on one particular machine I could feel the Lycra rubbing against my penis with each movement. I went from soft to hard so quickly it caught me off guard. A woman on a machine opposite me noticed and was smiling. Before I could even react I ejaculated and cum was visible thru the Lycra. My workout got cut short and I made a beeline for the locker room. I was still hard as I stripped out of the singlet so I quickly wrapped up in a towel and headed to the showers.
Aside from that I would say 5 minutes when I was younger. I was never a premature ejaculator and with practice developed good stamina to stop myself from cumming quickly so it is not easy to change that and I am OK with it that way.
I was working out on the circuit training machines and on one particular machine I could feel the Lycra rubbing against my penis with each movement. I went from soft to hard so quickly it caught me off guard. A woman on a machine opposite me noticed and was smiling. Before I could even react I ejaculated and cum was visible thru the Lycra. My workout got cut short and I made a beeline for the locker room. I was still hard as I stripped out of the singlet so I quickly wrapped up in a towel and headed to the showers.
Aside from that I would say 5 minutes when I was younger. I was never a premature ejaculator and with practice developed good stamina to stop myself from cumming quickly so it is not easy to change that and I am OK with it that way.