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2.
The strange phenomena that has emerged over the last few years wherein young, mostly black urban boys film themselves humping and grinding against empty furniture, the floor, etc.
"My shorty was over to her Grandmoms, so when I got horny, I just had some wicked Ghost Sex all up in the ottoman. Just practicing, son."
by Johnny Murder June 21, 2009
 
1.
A daring sexual maneuver where a man and woman begin having sex in the doggy style position. While the man is pleasing his woman, his friend comes out of the closet quietly behind them. The first man acts like he is adjusting while his friend takes his place. Making sure the female is facing the window, the first man runs outside and waves at her while his friend is giving it to her from behind. Guaranteed to make her look like she has seen a ghost.
You should have seen my girlfriend's face when a friend and I gave her some ghost sex.
by Adam Weddle July 04, 2008