Check out this Urinal Piss Gag:
Made of soft, flexible pure silicone. The strap-on URINAL is one nasty piss-gag. It was designed by piss-loving pigs. The flexible silicone urinal is deep and shaped so anyone needing to take piss can step up and fill it up. The yellow piss gag inserts are firm, flexible silicone. It comes with the bent tube insert, but it is removable so you can switch to one of two other available gags.
Available from the twisted fucks over at Mr S
More gags here
Oh, and if you like reading about human urinals, be sure to read the story Conversion.
