If a man is uncurcimcised, it takes longer for him to reach heightened stimulation because the glans penis is completely covered, whereas a man who is circumcised has lost all the foreskin and the glans penis (the mushroom head) is completed exposed-- allowing it to be completely and utterly stimulated during sexual intercourse. As a result, circumcised men will ejaculate faster than uncircumcised men.
How does that translate for the woman?
Well, think of satisfaction. If a man is selfish and satisfies his own need to ejaculate, he may do so too quickly and deprive his female partner of vaginal orgasm. Having an uncircumcised penis can be beneficial in that regard because the longer it takes for the man to reach sexual climax, allows him to satisfy his sex partner.
But of course, if you want to really satisfy a woman by controlling your orgasm and delay it, a man can implement keggel exercises, which can increase the time it takes for a man to ejaculate.
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