1) Weight/Mass: Equal to one metric ass load.
2) Numbers: Equal to a quantity greater than 17.
3) General: More than you have or should ever want to have without substantial health considerations, and possible proactive medical preparation.
Usage Notes: A shit ton is commonly considered to be, at a minimum, two shit loads. In imperical systems, used as "shit tonne."
Get me a shit ton of notebooks from the stockroom, Johnson; we're gonna have ourselves a write-up!