the large amount of semen left on a bar skank after the man has pulled out and ejaculated all over her back or chest. this semen is then rubbed into the skin while attempting to wipe it off; thus leaving a moisturized feeling
brotato: Hey man, did you end up slaying that River Rat last night?
bro: Yeah dude. She came back to my place and I gave her some Manayunk moisturizer on her back after I fucked her from behind.
The male version of a cocktease a man who leads the women who like him to believe he wants to have sex with them, but doesn't intend to deliver the goods.
Ben: I've emailed you a picture of my abs, i thought you might like em ;)
Nancy: omg you're such a moisturiser!