As I mentioned in another thread, I’ve been watching old episodes of America’s Funniest Home Videos on YouTube. In a February 1992 episode, the opening theme cuts away midway through to the Full House set. Jesse and Joey are revealed to be watching the show and remark that Danny resembles the host. At the time, Bob Saget both hosted AFHV and starred as Danny on Full House, but he got the latter gig first, so I guess technically it’s still a humorous allusion to a previous role.