Based on the term "skeet", which is defined as the act of ejaculating on a partner after sex. Skeet slapping is the act of slapping a sheet, piece of clothing, or other absorbent material down on the skin that has been skeeted upon. The semen then acts as an adhesive, holding the material to the skin and leaving even bolder evidence of one's conquest.
"Man, she said she wouldn't swallow, so I busted a nut on her forehead and skeet-slapped her with my sock."
A female who believes that she is exceptionally attractive or otherwise something worth aggressively pursuing, when in fact, she is very much average and on par with women one would meet on a daily basis. Based on the word ho, which in this context would refer to any female of breeding age.
"Marie acts like she's hot shit, but she's really just an everyday ho"