While male nipples are basically the same as human nipples, they might even be more sensitive than yours since guys aren’t used to having them touched so often. "For a lot of men, their nipples are uncharted territory — an erogenous zone they haven't experimented with," explains Patti Britton, PhD, a Los Angeles-based clinical sexologist and author of the The Complete Idiot's Guide to Sensual Massage. Touch them, however, and you'll send shock waves of pleasure radiating through him, she adds.
23. 69ing is terrible and overrated and bad, and let's just ban it already. OK, maybe you like it but IMO, it is terrible and dumb. The whole point of oral sex is that you can just lie there and do nothing while someone else gives you extreme pleasure. 69ing is like if, while getting a professional massage, you had to also file your taxes at the same time. Doesn't that sound like a nightmare to you? Because it is. It would be a nightmare.
Oral sex has been observed in the animal kingdom among many species. It has been suggested that there is an evolutionary advantage due to the tendency of primates, non-primates and humans to have oral sex. Oral sex, at least fellatio, also exists among the fruit bat, Cynopterus sphinx; it has been observed when the bats are mating. These bat pairs spend more time copulating if the female licks the male than if she does not.
Nancy Friday's book, Men in Love – Men's Sexual Fantasies: The Triumph of Love over Rage, suggests that swallowing semen is high on a man's intimacy scale. The man receiving fellatio receives direct sexual stimulation, while his partner may derive satisfaction from giving him pleasure. Giving and receiving fellatio may happen simultaneously in sex positions like 69 and daisy chain.