Sometimes used to imply the act of sexual intercourse, similar to hump. Appears to be occasionally used to imply the woman, instead of the man, is making the movement.
He looked so hot and hard she really wanted to homp him there and then.
Friend: i saw that picture you put in your hompy last night!
Friend2: which one?
Friend: the one where you were naked in the bed Friend2: OH FUCK!!!!! I WAS SUPPOSED TO PUT THAT AS HIDDEN MODE!!!