Why doesn't food wrap discharge when you touch it with your hands?

Question

Plastic food wrap clings because it is electrostatically charged during manufacture. When you touch something that is electrically charged, it becomes grounded/earthed.

Answer 1

The above answer is hinting at the reason. Plastic wrap tends to attract electrons. Dry skin tends to give up electrons. Wetting your hands will alleviate the electron transfer to a degree.

Answer 2

I don't know why it doesn't discharge, but I do know it is VERY frustrating. Sometimes it helps if your fingertips are wet though.