You've politely sipped two martinis and said no, demurely, to a third. You ordered the angel hair pasta and left at least a third of it on your plate. You sat like a lady, with your legs crossed, you smiled at his jokes but resisted the urge to giggle, you let him open the doors even though your arms are perfectly capable of pushing and\or pulling. In short, you have spent the entire evening pretending to be exactly the kind of girl that you aren't.
But when his car pulls into your driveway, the jig is up. Three kisses and a hand under your shirt, and instead of pulling away, you're inviting him in.
So now you're sitting on the couch, each with a glass of wine from a stash of bottles you keep for exactly this purpose, both pretending to watch a movie that neither of you could identify if pressed, while his hand creeps up your thigh, the one you rubbed with lotion hours earlier thinking of exactly this moment.
I take his hand and put it right where we both want it anyway. He'll look a little shocked at first - I've just broken with the dating protocol - but then slowly, it will dawn on him that I've just saved us both 45 minutes of his hand's ascent, quarter-inch by quarter-inch. Now that the cards are on the table, the panties can hit the floor.
Panties are last. Everyone knows that panties are last!
Shirts are first.
If you're a dirty girl, you've selected your date outfit not just for its level of hotness, but also its ease of removal. Your shirt should not be of the crazy-amounts-of-buttons variety (or god forbid the ornamental buttons - kiss that shirt goodbye if you were that stupid), and for heaven's sake stay away from the tricky hidden zipper on the side shirts (I mean, to be fair, those shirts are even hard on me!). If you like the guy you're about to have sex with, cut him some slack and go with a top that pulls off easily (and if you don't like the guy, reconsider the sex). No matter what, a dude will absolutely forget to be careful of your hair when he takes your top off, so don't be too attached to the style it took you 55 minutes to achieve. Be prepared to just shake it out, bat your lashes, and not think about it again until you're trying to comb out the sex tangles after he goes home.
Boy shirts aren't too difficult. There are basically only two varieties: the kind you pull over his head (if he's tall, remember to do this while you're still sitting on the couch) or the kind you unbutton. If he's wearing a button down, let him take your shirt off first. Then, reach up and sweetly work on his first couple of buttons. Look up at him from under your lashes, let him get a good look at the cups of your bra doing their good work, and he'll hurry the process up, either working on the buttons from below, or sacrificing the buttons entirely and forcing the shirt off one way or the other. Make sure that you let the shirt fall where you are, still outside the bedroom. The trail of clothing is of the utmost importance: more on this later.
He'll be pretty anxious to get your bra off at this point, but don't let him. The next part can be tricky, and girls, you definitely want the upper hand.
Boy belts can be hell, and I've found it's one of many tasks best performed on one's knees. There are many reasons for this, the least of which is the view he'll get, which will make him excited and get him thinking of other things you might be doing while you're down there. But you're also giving yourself the best angle to work at, and a good overview of the obstacle. Now, as the girl, you realize it's your job to be slow and teasing and his job to be crazed and efficient (without much emphasis on the efficient). A finger in the waist band of his jeans is a good way to start. If you discover something in there you don't like (say, panties that are prettier than yours) you can hit the brakes and kick him out only half naked. This is all the encouragement he really needs. He'll be unbuckling that belt faster than if his pants were on fire. Actually, as far as he's concerned, his pants pretty much are on fire. Stop him there, though. Leave the button and the fly for yourself. Say hello. Acquaint yourself, but only briefly, before standing back up, but don't be afraid to leave a little lipstick behind.
Now that you have access through the front of his pants, he now has plenty of motivation to make your bra melt right off you. Let him get the zipper of your skirt or the button of your pants, which will be done in a fumbly fashion if you're doing your job right and being a good host to the friend you made when you were on your knees. Stop before you enter the bedroom, and each shed your own bottoms. This is important because you'll want to take the opportunity to also take off your socks, because lord knows there is no graceful or sexy way for someone else to do this for you. Socks can be a real turn-off. The only exception to this rule is if you're wearing thigh-highs. Those you can leave on.
You should both still be wearing underwear when you get to the bed, but his should come off before getting in. If he's a little shy though, you can take them off for him once he's in, just be sure to throw them onto the floor, out of reach. Yours should always be left for last, because taking them off will leave him in a very opportunistic position for how you'll want things to go from there. A little upward tilt of the hips is a helpful way to let him know what's on the menu.
And the genius of it is, when it's all over, he'll have to get out of the bed to get his boxers. If he's not making the move quickly enough, just start hogging the sheets, he'll catch a draft and be inspired to find his underpants soon enough. And cleverly, retrieving the rest of his clothes leads him pretty much right up to the front door, where you first threw his shirt. At this point, it's easy to hand him his shoes as you open the door. While he's doing the hopping-on-one-leg-tying-his-laces thing, pat his bum, kiss his cheek and give him a rousing "Thanks, that was fun!"
Close and lock the door.
Have a scoop of Ben & Jerry's.
And that's how a good girl has bad girl sex.