a very long beard that grows for years without ever being cut. Guitarist Billy Gibbons and Dusty Hill of the band ZZ Top both sport this type of beard, way down past their bellies. They've been growing them out since 1974 if not before. In the 80s they were offered millions of dollars by a razor company if they'd shave the beards off. They declined. Their famous facial hair made the band notorious when they made those videos for the album "Eliminator". Ironically ZZ Top drummer Frank Beard has no beard, he's usually clean-shaven.
That Vietnam vet who ferries a go-cart service at the Veterans Administration clinic parking lot has a ZZ Top beard.