1. (noun) A person (generally a girl), who will do any slut-like act they are told to. They're called a slut puppet because of the way that you can completely control any sexual thing about them. Be wary of what you say around them.
2. (noun) A band: The Slut Puppets
Jeff: Man, did you meet Kara yet?
Joe: Yeah, I told her she could suck my balls and she literally did.
Jeff: I know, she'll do anything you tell her! She's such a slut puppet!
Jeff: Do you listen to The Slut Puppets?
Joe: Yeah, dude, they rock!