Just when you think the Bill Cosby scandal couldn't get any yuckier, it hits a new nadir. In the latest development, E! reports that Cosby is suing model-actress Beverly Johnson, who was part of the first wave of women to accuse Cosby of drugging and raping them decades ago.

Bill Cosby rape scandal: a timeline of bad behavior

Johnson, whose essay about the experience appeared on Vanity Fair's website in 2014, said Cosby drugged her in the mid-1980s. Cosby filed a defamation lawsuit Monday against the 63-year-old Johnson, saying her claim was an "attempt to revive her flagging career as a model, actress and public personality" and part of a bigger campaign to "assassinate" Cosby's reputation. His lawsuit comes one week after he countersued seven women for defamation.

What do you think of this latest development?

Check out Beverly Johnson talking about Cosby's admission that he gave women quaaludes below.