Margot Robbie No More Bathtubs

1/15/2016 6:48 AM PST

Margot Robbie -- No More Bathtubs!!!

Margot Robbie could sell anything in a bathtub, but she won't.

Margot was breezing through at LAX -- hot as ever -- when our photog asked if she'd reprise her famous role in "The Big Short" to do other educational flicks.

By the way ... is it possible she really hasn't seen the movie?