Vomit

Vomit was one of a variety of bodily fluids that could be squeezed out of the rocks of Nebulax 4. (K9TV: The Bounty Hunter)

Humans could also eject vomit from their systems whenever they felt ill. As an added bonus to his infospike, in 200,000, Adam Mitchell had a Vomit-O-Matic implanted into him, which froze his vomit. (DW: The Long Game)