October 30th - Third Time, jerking without moving my foreskin back

Yeah so I do that sometimes, that I try to jerk off without moving my foreskin back and forth. Which makes it a bit harder for me to cum, since my glans is pretty sensitive and rubbing it directly is a bit rough, but with my fingers rubbing over the edge of my glans under the foreskin is usually the best part, so it usually takes a bit longer like that.