Costco has a cult-like following — people love all aspects of shopping at the members-only warehouse store. Whether it’s their famous $1.50 hot dog combo or their rotisserie chickens, people seem to always be talking about Costco for whatever reason. But this time, it’s for the wrong reason. Costco Cups Go Viral — Oops!What is the first thing you do when you think you hear or see something that can’t believe? You might head over to Reddit to see if others have experienced what you have. In this instance, the Reddit user posted a picture of their Costco drink and asked if people see what they s…