Oral sex has been observed in the animal kingdom among many species.[46][47] It has been suggested that there is an evolutionary advantage due to the tendency of primates, non-primates and humans to have oral sex.[48] 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.[45][49]


But one thing which continues to make men question their virility and sexual attractiveness is penis size! Yes, it's the old question of "Am I big enough?" and the other vexed issue of premature or rapid ejaculation. We quite understand why why men are bothered about this, because society places such a burden on men to fulfill the sexual desires of women.
What impresses a guy most in bed? Surprisingly (or maybe not so, guys do have a reputation for being lazy), most confessed that they're not all that interested in theatrics or trapeze acts. In fact, many men told us that they're simple creatures who basically just want their wives to show up. But if you're looking to give him something extra-special, they'd love a little bit of this.
Much like men do when the roles are reversed, your partner wants to feel like you are having a good time down there. Otherwise she will start to feel self-conscious and immediately tense up, making it way less likely that she’ll be able to orgasm. “I’m not saying you need to take it to porn star levels of enjoyment, but a few well-timed 'mmms' and some sultry eye contact could be just the thing to send your partner into another world of pleasure,” says Morse.
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