Is Fiona, by definition, considered a whore?

Honestly she just has Nancy Botwin syndrome, she porks all the guys everywhere in spite of the fact that in real life someone like her wouldn't. I'm not saying her sexual behavior is wrong, just that it doesn't match up with her personality; same with Nancy.

She’s not a whore by definition. She’s just a loose turbo slut with awful taste in dudes.

Isn't there an episode where she has sex with two guys (Gus and Sean, I think) the same day? Remind me which episode it is.