A woman who listens to radio shows religiously, and attempts to sleep with members of the show. Often sleeping with various members of the cast to get to the host. (see also; groupie, ring rat, skeezer, gold digger.)
Screener - "Hey man that radio rat is on the line again, should we let her through?"
Host - "Why so she can try to give me the clap too? Hang up on the bitch."