It seems to me that there is a lot more than cr@p and urine.
Body secretions include:
* Cerumen also known as earwax
* Gastric juice
* Breast milk
* Mucus (including nasal drainage and phlegm)
* Saliva
* Sebum (skin oil)
* Semen
* Sweat
* Tears
* Vaginal secretion
Saliva is interesting. It's actually a venom (the enzyme components for digestion).
WIKI: Saliva is produced in and secreted from the salivary glands. Human saliva is composed of 98% water, while the other 2% consists of other compounds such as electrolytes, mucus, antibacterial compounds, and various enzymes.
E.g.
US Patent 7060265 - Cloning and recombinant production of polistinae venom enzymes, such as phospholipase and hyaluronidase, and immunological therapies based thereon