Describes someone who is obese enough to have folds in their belly.
The sharp folds inside are considered a singularity, and the function is not 'well behaved' at that point.
Typically a woman.
Ex1)
The non differentiable sat on a chair. The chair snapped in two.
The manager of the beach sued the non differentiable woman to pay for the chair.
The non differentiable sued the beach for injury.
The court decided that it was the non differentiable`s fault, and banned her to go to beaches.

Ex2) Some people like having sex with non differentiables. I can`t understand why they would do that gross stuff.
by Jekr December 10, 2018
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