...but this looks like a handy device: http://www.uroclub.org/details.html
One size fits all?
"Capacity: Over half a liter, twice the volume commonly urinated."
Hmm Is a pot of coffee <= half a liter? Note to self: buy two.
Miles and miles all the while I feel secure
Even when the fuse gets short I can keep my nerve
Believe in such a tradition I got in my truck cab
(I like this live version - gotta scroll to 4:15 for it, though...)
http://www.youtube.com/watch?v=rtf5ho9cLSQ&feature=related
That reminds me, when I was growing up in Houston there was a humor columnist for the Chronicle named Allison Sanders. He called himself The Motorman, and if a reader wrote or phoned in a funny story he could use, he'd call them a Motorman's Friend.
Years later, I read that in the old days a Motorman's Friend was a urinal bag with a tube that a streetcar conductor (motorman) would strap to one leg since he couldn't take a bathroom break. Makes sense but Sanders never let on how he was "honoring" his readers. :)