it is the mixture of shit and milk. and /or used as an insult.

The sugary left-over milk that resides in your bowl after you have finished all of the cereal. A highly concentrated mixture of sugar and milk often slurped directly from the bowl.

To transform into a teenage mom.

('to shilk', verb) - the act of making a person or animal in some way disabled by means of static shock

The combination of milk and sugar artfully blended as one harmonious concoction.

sheepcow's shilk

A contraction of the words shark and milk, based on the mammalian product known as milk, in this context produced by Cartilaginous fish monstergirls. Specifically elasmobranchs, or shark and ray girls. Despite not being produced by mammals, shilk is very delicious and produced in large quantities.