A promiscuous young girl that likes to get fucked a lot.
She's a dirty spunkpuppy that girl.
noun:
1): A term of endearment for someone that either appreciates swallowing lots of cock-juice, or who squirts a lot of jizz-cream when they orgasm.
Whoa, you almost drowned me with that load, dude! You're a horny spunkpuppy!