22+ best trending Grey Sweatpants Meme. The Grey Sweatpants Challenge is simply a way for guys to show off their giant penises through the medium of grey sweatpants. They must be gray in order to be “gray sweatpants” likely has to do with the shadow effect: It’s more difficult to see the lumps and bumps on a person’s body when the person is wearing darker colors. Checkout the memes below.
Grey Sweatpants Meme
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