You wake up at 2am Girlfriend/wife is asleep. You are wanting sex. The girlfriend/wife had work the next day.
She is dressed in top and panties.
What are the correct steps from here to get her in the mood to have sex??
Any wrong move could result in immediate shut down 
Poke her in the butt with your boner. It's an aphrodisiac no woman can resist
Step1. You want to secretly tie her arms and legs to the bedposts.
Step2. Plow away.
Step3. ????????.
Step4. Go into living room and sleep.
Just fuck her. Make sure to ask first though, i.e. can i fuck you if your sleeping. My ex was fine with it, she told me to wake her up with a lick out then fuck away.
much safer to ease out of bed to another room, turn on some porn and jerk it. then go back to bed. peace in the morning.
Mencken -This plus rubbing her ass and thighs. Follow up with "want to have a quickie?" Plow, nut, sleep, profit!Poke her in the butt with your boner. It's an aphrodisiac no woman can resist
yeah just go jerk it.
Take pics of said gf in top and panties. Post on OG. Join OG brethren over the interwebs with a group wank over said pics. Go back to bed while giggling before dozing off.
If she doesn't like surprise sex, give her a surprise divorce.