"The thirteenth century Provençal Jewish wrier Isaac ben Ydaiah, for example, appears to have been concerned not only that women might want to cheat, but that when they did they would find more pleasurable options outside of their communities.
According to him, you see, Jewish women were at risk of being interested in having sex with gentiles because gentiles were uncircumcised. Isaac believed that removing the foreskin made penises more sensitive, and as a result, circumcised men reached orgasm more quickly than their uncircumcised counterparts, reducing the pleasure that women could experience. Dude lays it out like this:
According to him, you see, Jewish women were at risk of being interested in having sex with gentiles because gentiles were uncircumcised. Isaac believed that removing the foreskin made penises more sensitive, and as a result, circumcised men reached orgasm more quickly than their uncircumcised counterparts, reducing the pleasure that women could experience. Dude lays it out like this:
If a woman gets with an uncircumcised man however, she will…This is the way the circumcised man acts time after time with the woman he loves. He has an orgasm first; he does not hold back his strength.
As soon as he begins intercourse with her, he immediately comes to a climax. She has no pleasure from him when she lies down or when she arises, and it would be better for her if he had not known here and not drawn near to her, for he arouses her passion to no avail and she remains in a state of desire for her husband, ashamed and confounded.[2]
…lie against his breast with great passion, for he thrusts inside her a long time because of the foreskin, which is a barrier against ejaculation in intercourse. Thus she feels pleasure and reaches an orgasm first. When an uncircumcised man sleeps with her and then resolves to return to his home, she brazenly grasps him, holding on to his genitals, and says to him, “Come back, make love to me.” This is because of the pleasure that she finds in intercourse with him, from the sinews of his testicles – sinews of iron – and from his ejaculation – that of a horse – which he shoots like an arrow into her womb. They are united without separating, and he makes love twice and three times in one night, yet the appetite is not filled.