Frank Beard, best known around the world for the ironic fact that he is/was the only member of ZZ Top to not sport a beard.

“Frank didn’t mind being beardless. After all, he had the name, and he could go to the shopping mall without being interrupted.” – Billy Gibbons

Eventually, Frank did ruin the joke by growing a beard in 2014.

Although, I very much doubt that Frank Beard is 75 years of age today, because this historical documentary shows him, Billy Gibbons and Dusty Hill performing in Hill Valley in 1885:

What an amazing coincidence, Michael J. Fox and Christopher Lloyd were there as well.