Currently, coming instantly is a physical impossibility for me with any woman using any method.
Back in the days of my prime, however, which is increasingly being seen in my mind's rear view mirror, it would be teasing touches. I remember a time in summer of 2010 with a then NYC Indy of Brazilian nationality and Japanese ethnicity, who was good at using sudden, light, teasing touches. I usually finished by way of a blow job with her, but one time she was straddling me and started stroking my dick and I was pretty sure I was going to come so I had to grab her hand and stop her to prevent that from happening. Which I barely did.
Back in the days of my prime, however, which is increasingly being seen in my mind's rear view mirror, it would be teasing touches. I remember a time in summer of 2010 with a then NYC Indy of Brazilian nationality and Japanese ethnicity, who was good at using sudden, light, teasing touches. I usually finished by way of a blow job with her, but one time she was straddling me and started stroking my dick and I was pretty sure I was going to come so I had to grab her hand and stop her to prevent that from happening. Which I barely did.