Estim sleeve makes my cock give up a cumshot, but not without a fight

I've got the estim sleeve on my dick... which is a completely different feeling than pads. It gets right to work. My dick is tired out and my balls are swollen from being bound tightly and estimmed in a long edging session. but the estim takes over. My soft cock starts twitching and ejaculating and I orgasm hard... warm cum slides down my cock.