Chrissy Teigen Calls Out Rob Kardashian — Then Gets Super Cryptic

Chrissy Teigen played a tricky little game on The Tonight Show Starring Jimmy Fallon this past Friday. It involved her providing an answer to a question that remained secret. She would only reveal what the question was if she didn't down one of the colorful shot that was directly in front of her.

Watch the clip above to find out why she remained super cryptic after answering "Rob Kardashian" as one of the questions! What do you think it was? Sound off in the comments.