Actually I stole it from Seinfeld :/
It's George's chosen porn name
(
Dixipoos Bye Bye Blackbird,
Fri 30 Nov 2007, 16:36,
archived)
and they stole it from Steve Purcell
it's in an old Sam n Max comic. Sam refers to himself as Buck Naked, Texas Ranger.
(
Mockingbird Practitioner of SCIENCE,
Mon 3 Dec 2007, 13:26,
archived)