Back in the early 1980s, I went to a nightclub to see The Fabulous Thunderbirds (I think that was the band. It might have been George Thorogood.). After we got our tickets, a short guy with a long beard entered along with four or five other people. I said to the attractive young woman who was with them, "Hey, he looks like a member of ZZ Top!" She said, "Yep, that's Dusty Hill." They wound up sitting at the next table over from where we were.
I love ZZ Top's music from the '70s. RIP Dusty Hill.