I desperately want to fuck my wife's sister
It will never happen, but I do have it all planned out. I leave my house and call in late to work. At this time, her husband is off to work and the kids are at school. I show up and knock on the door. She seems surprised to see me, but for some reason she is dressed in a white lace panty and bra set.
"Oh, hey there. Wasn't expecting you," she says with a mischievous grin, "but maybe you can help me with something."
You know the rest of the story...
What naughty situation drives you crazy when you think of it? I mean my dick gets rock hard every time I imagine being inside her. AAARRRGH!