A slooty person, or someone being a sloot, is a person who is perfectly respectable but is exploring their sexuality by doing things which could be considered slutty. This is a positive term used for someone who is comfortable with their sexuality and using it to their hearts content. It is not gender specific.
Person 1: " I think I'll be a little slooty tonight. Maybe I'll see how many boys I can pick up in the evening."
Person 2: "Sounds like a perfectly respectable Slooty-venture"