What does a guy feel when having sex?

Sex is quite the pleasurable experience for men. Feels good to us from start to finish. The male orgasm is an explosion of pleasure, yet painful for a brief moment that is very difficult to explain indeed as stevoboy said. The joy and passion of hugging, kissing, touching and just looking at a lovely women spread out and inviting a man is just too good for words to describe. Our minds are focused on one thing only:

HOLY *#&%! I'M HAVING SEX WITH THIS HOT BABE!

Nothing else matters. Not the size of her boobs, not the extra pounds she may/may not have, not if you get caught by her parents, not the smells or the mess. Nothing. Sex is wonderful for men because it's sex with a real live person: no masturbating, no wet dream, no inanimate object filled with air. It's the real thing.

Hopefully this helps understand why men want sex so much

Suck your finger and then multiply the sensitivity by 50.

Its kinda hard to explain that one but, I know it feels really good and then when I guy cums he has an outward explosion witch is why guys get really tired after having sex