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2.
A sex slave in which the master defecates into their mouth.
Girl: I told you we could never be together. We come from two different worlds.

Guy: You'll have to find a new toilet slave then. I'm out.
by Mischief Maker February 26, 2005
 
1.
a bdsm term where the Master or Mistress uses their slave as a toilet - either pissing or defecating, although pissing is more common - and generally the aim (bad choice of word) is to catch it all in the mouth with no spillage. a good toilet slave is generally a matter of pride for both concerned.
Master 1: what do you think of my new sub? she's just training to be my toilet slave.
Master 2: she's a keeper then. can i give her a go?
by cowgrrl April 02, 2007