Lonesome Cowboy Dave is a SubGenius best known to other SubGenii for frequently being a guest on the Hour of Slack radio show hosted by Rev. Ivan Stang. He's a longtime WCSB contributor, having collaborated with the late Chaz Smith on various ESO projects. One such gig resulted in Lonesome Cowboy Dave's Greatest Hits.
Here's a video of Lonesome Cowboy Dave talking about his Double Mean Baby Head at X-Day 11: