The faster and harder you do the sex, the awesomer the sex is. This is the main rule of sex.
They will then tell everyone at the cop building how good you are at sex, which will earn your their respect.
Make sure she's put her birth control pills inside her vagina before sex though, otherwise one of your balls comes out of your penis and lives in the vagina hole and a baby hatches out of it.
The boobs are known as the Vaginas of the Chest by us sex-knowers. The nipple part is like a reverse vagina though, because nothing can go in it. In fact, since the nipple part goes in your mouth when you kiss it, your mouth is the Vagina of the Face (a fact known to all sex-knowers).
The buttcheeks are the Boobs of the Ass, except without the nipple parts.
It's like the pool, where you don't want Jimmy Tuccio to make fun of your manboobs, so you leave your shirt on. It's okay, since man nipple parts do not play a role in the sex doing.
That's why your shorts have the zipper part for the penis to come out of. Also you don't want to leave behind your wallet (even though you got that cool wallet chain so it's pretty secure) if the cops want to see your wallet to see your school ID to make sure they know who it is who's doing all the good sex.
If your sister asks what you're doing you just say you were taking a nap and she's like "uh huh, with your eyes open and Friends With Benefits on TV" (she has caught you doing this to Mila Kunis movies before).
For a brief moment, the two of you are overtaken by raw lust - but both must appreciate that the other is someone they care about whose desires in that moment are all that matter. If each is focused on pleasuring the other instead of selfishly worrying about themselves, the experience will be far more rewarding for both.
While the butthole is the Vagina of the Ass, the girl might have pooped out of it right before and that would be real gross if you peed in it and the pee mixed with the poop (btw you're supposed to pee in whatever hole you stick your weiner in).