Naslo is an "underdog" term used sometimes used in chatrooms. It stands for "Name, age, sex ( gender), location ( state/country, not like street number... that's sketchy) and orientation (sexuality)".
bored_grrl: heyy :
Emoboi: heyy, naslo?
bored_grrl: Melanie, 23, f, texas, straight. how about you?