Piss is certainly one of my favorite items to play each time!
Piss Shower for the Rubber Slave
http://thisvid.com/videos/piss-shower-for-the-rubber-slave/
Forced Piss Drinking via Funnel
http://thisvid.com/videos/forced-piss-drinking-via-funnel/
Slave Training – Piss Drinking
http://thisvid.com/videos/slave-training-piss-drinking/
Drinking My Piss From a Bottle
http://thisvid.com/videos/drinking-my-piss-from-a-bottle/
To humiliate him, I wet his pants before letting him go!
http://thisvid.com/videos/wet-slave-s-pants-before-leaving-him-going-home/