Today Show meteorologist Dylan Dreyer is expecting baby number two, and just announced the baby's sex in the cutest way — well, her 2-year-old did. On Today's third Hour, Dylan's coanchors shared whether they think the baby is a boy or a girl before two special guests — Dylan's son Calvin and her husband Brian Fichera — "drive" out onto set in a motorized car with balloons tied to it. The color of the car, balloons, and Calvin's "Big Brother" shirt give it all away: it's a . . . boy! Watch the full clip above to see how adorable Calvin looks through the whole thing, and get ready for boy number two, coming in January 2020!