Help my bi friend is trying to ask me out?

ima girl shes a girl but shes biual and im straight she keeps on saying o i like ur *** and.... then shes like hey can i tell u something and she keeps saying that and when she asks me out wat should i say cause no i really wont go out with her cause thats nasty i cant tink about likeing a girl ewwwwwwwwwwww