If you guessed Lambert O. Lively, you guessed correctly!
I bumped into Nance, one of Lambert's moms, last month at a craft sale. It was great catching up with her and hearing all about the boy. He's still a total loving machine and everyone is so happy he's a part of their lives. He get's along famously with his brother Percy. It sounds like they're the best of friends.
I forgot to ask her is he still does this...
I've watched that clip hundreds of times and STILL makes me LOL.