Slurpee announces its BYOC Day again for August 19 and 20. They’re encouragingpeople to bring their own cup into participating 7-Elevens to get a discounted rate for your slurpee of $1.50. 7-Eleven is using the slogan “What will you bring?” to encourage people to bring their funniest cups. The only rules are that the cup must be food safe, less than ten inches tall and drip proof. There’s only one cup allowed per person. Bring a fish bowl, a pineapple, or even a bucket and shovel and you’re good to go.