Melissa McCarthy takes a lie detector test for Vanity Fair. Who's the funniest person she's ever met? Is political correctness killing comedy? Does she believe in the Illuminati? Find out all that and more and watch Melissa take a polygraph exam. Melissa McCarthy stars in "Life of the Party," out in theaters May 11th.

• Kristin Davis
• Ariana Grande-Butera
• Colson Baker