Pure Dumb Blonde Slut.
Typically bleached blonde, but natural blondes can fit into this category too. Pretty much any slut who acts like a stupid bimbo.
Random guy on street: "Suck my dick bitch!"
30 minutes later...
PDBS: "I don't know why he won't call me back!"
smart person: "Lets see, you're a PDBS and he doesn't even know who you are. You just sucked his dick and he left."