A pork pie hat is a type of hat that is typically made from felt or straw, and has a flat top and brim. It is named after the traditional English dish, pork pie, which is made from meat and pastry.
If your Uber account is waitlisted, you should check your email to see if you have been selected to participate. If you have been selected, you should follow the instructions in the email to complete your registration. If you have not been selected, you can try again next time.