"My parents were very, 'As long as it was for art's sake,' " Rauch says of her performing the racy song

By Alex Heigl
Updated February 26, 2015 09:05 AM

Melissa Rauch is justly adored from her starring role in The Big Bang Theory, but beneath that innocent exterior, Rauch is hiding a racy past.

Exhibit A: The star brought some home movies of her childhood to Conan Wednesday night, including this clip of her singing a very age-inappropriate song from A Chorus Line.

The clip shows Rauch singing the song “Dance: 10; Looks: 3 [T— and A–]” from the classic stage production. Conan O’Brien and Andy Richter seem vaguely mortified to have the clip on the show: O’Brien makes some comments about it being used in court.

“My parents were very, ‘As long as it was for art’s sake,’ ” Rauch says. “We could see anything, no matter if it was inappropriate for us.”

Try bearing that in mind when you watch the clip.