He was born in the snowy mountains of Ecuador in 1942, but is still somehow in his 20's and looking super fine.
Evidence:

Clav received an Einstein visa in the early 50's, came to the US and graduated from MIT at age 11, and went on to invent quantum physics. Max Planck ended up getting all the credit for that in 1900, but only because Clav went back in time and taught him the whole thing after the fact.
Clav then transitioned to athletics and defeated George Foreman 15 times to become the heavyweight boxing champion of the world. It's well known that Foreman named all of his kids George, but lesser known that their middle names are all Clav, as the result of a friendly wager between the gentlemen.
Later in life, Clav founded the companies Google and Chipotle. He is quite wealthy now but a man of the people and gives out free guacamole coupons to those who cross his path. Always with that incredible Ecuadorian smile that has become his trademark.
These days Clav writes music, spawning over 200 #1 hits for artists ranging from Taylor Swift to Insane Clown Posse. He is not a juggalo but does have many important thoughts about magnets.
And now his crowning achievement: Clav is our newest NBA General Board Moderator on RGM! Welcome to the team hooray!