Title said situation and op said scenario but your poll is just about position so I'm a little confused.
Anyway for scenarios (which is what really paints the picture) I've had many but my current one is...
She has an ex boyfriend over and it's all good and we all get along as friends.
I play him at pool and my wife comes in with drinks and snacks and watching the game for a moment, she jokingly says "winner gets a kiss "
The game continues. I lose.
She stands up and gives her ex a nine long kiss on the lips. Her eyes close. Her mouth opens. Their tongues dance.
He takes a chance and moves his hands to cup her breasts.
She stops him.
"oh no you don't. You only won a kiss"
"fine then" he replies. "winner stays on. You have to play me now. If you win, you are free again, but if I win you're all mine tonight" he jokes.
I sit back to watch the two of them play. My wife beats me at pool often so this should be a good game.
About half way through my wife is ahead but the black is close to a pocket.
"if I sink the black I lose right! She asks.
She knows the answer.
She switches from the clear shot she had on one of her balls, walks around the table, looks at me With a grin. Bends over the table giving me an eye full of braless cleavage, and shoots directly at the black and sinks it.
Now you can add all the positions you want, but that there is a "scenario"