Sex on 'Top Chef Masters' (VIDEO)

We're approaching the season finale of 'Top Chef Masters' (Wed., 10PM ET on Bravo). But in order to make it to the final episode, the four remaining cooks will have to deal with a fairly unusual challenge.

[Spoiler alert.]

This week, the chefs are judged by members of the Groundlings improv comedy troupe, and in keeping with that theme, each cook must improvise based on a random assignment of ingredients and a theme. Chef Susur Lee lands the fairly easy combination of "chocolate," "peanut butter," and "lust." How hard can that be? Chocolate and peanut butter together equal awesomeness, and can probably easily inspire lust. But surprisingly, Susur's dish raises a few eyebrows.

In keeping with the "lust" theme, Susur designs a desert that is meant to look like a thong. But in reality, it ends up looking more like ... a vagina. At least, this is the consensus of the judges. Although, as one of the comedian judges admits: "I think everything [looks like] a vagina." Well, that's some good honesty right there. Will Susur's sexy dish be enough to catapult him into the last episode?