Will Dr. Jason Seaver be showing the Tanners that smile? For those not in the know on TV theme songs, that means Alan Thicke of Growing Pains fame is guest starring on Fuller House when it returns for a second season on Netflix.

Thicke starred on ABC's Growing Pains from 1985-1992. His costar: None other than Fuller House star's Candace Cameron Bure's real-life brother Kirk Cameron. Thicke took to Twitter to announce his guest spot, which got many sitcom fans buzzing about a possible crossover.

"Fuller House is over its growing pains. Renewed season 2. See you there. See me on it. #fullerhouse @netflix @candacecbure @bobsaget," he tweeted.

Request for comment from Warner Bros. and Netflix was not immediately returned.