Mary-Kate Olsen's going Ashley-free in Showtime's "Weeds."

What's that like?

"It doesn't feel that weird...I'm doing what I love. I go on auditions by myself," says Olsen, looking as demure as a girl can look in a very short dress and very high heels.

Asked to describe her role -- she's supposed to be a love interest for the older son of Mary-Louise Parker's character -- Olsen offers up the nugget that she's "a good Christian girl, with a twist," and not much else, though "Weeds" creator Jenji Kohan suggests one possible twist when she says that she doesn't think "Christianity and pot-smoking are necessarily mutually exclusive."

Matthew Modine, who's also joining the cast this season, riffs a bit when I pose the the same question to him, claiming at first to be the other Olsen twin, recently endowed with a penis.

Settling down just a little (wait till he sees the transcript), he eventually describes his character as "a religious pretender, like so many people in our government, who is profiting from ideals that were written so many thousands of years ago."

Or something like that. Maybe when I see the transcript, I'll understand better.

Maybe not.