Crusty

https://www.ebay.com/itm/205030285464

We originally focused on the dirty sock and croc in the background but this crotch photo gives us something much crustier. Take a good long look at this person’s thumbnail. His actual thumbnail, and not the photo. The good news is that for the low, low price of one dollar or best offer (which would be ninety-nine cents), you can have this gas cap that has been touched with that encrusted thumb.