a dirty lying bitch. a person of the female gender who is immature and generally goes out of their way to be passive aggressive and start unnecessary drama where it is not needed or welcome.
guy 1:Hey brah did you hear about jessica?
guy 2:Yeah dude, kirsten told me she fucked 10 guys
guy 1:What a nittywaggom, thats not true, she fell in the shower.
guy 2:Oh well shiiiit, that lying bitch.