The weather forecast may be calling for snow in some parts, but many still got their freeze on during 7-11’s annual “Bring Your Own Cup Day” on March 18 and 19. Unlike previous years, 2016 marks Slurpee’s 50th anniversary and to celebrate the occasion #BYOCUPDAY was expanded to two days, meaning even more crazy sights, like a prosthetic leg. How did it work? Bring any container and fill it up with the beloved frosty drink for just $1.50. Continue reading for more. Click here for a few bonus images.