A type of slang, slightly informal, mostly used by guys talking to attractive girls.
Urban Dictionary definition:
A contraction for "Hello, I find you attractive and would like to dance with you, share some drinks with you, and then perhaps have sex with you. Nothing serious, of course, and I doubt that this will result in a long term relationship, but I would appeciate you considering my proposal."
REMEMBER, THAT WAS USER-SUBMITTED!