Slurpee lovers, get your pitchers ready.

7-Eleven is hosting its “Bring Your Own Cup Day” from 11 a.m. to 7 p.m. Friday and Saturday.

Customers can fill up on Slurpee flavors in whatever cup they bring – as long as it fits through a 10-inch hole – for $1.50.

“Bring Your Own Cup Day” is part of the Slurpee’s 50 year anniversary celebration. There was also a “Bring Your Own Cup Day” in March.

It’s not uncommon to see customers using drink pitchers, small coolers, kitchen pots and pans to fill up on the frosty treat.

In honor of the Slurpee’s 50th year, here are some fun facts about the iconic drink:

• 1959: Omar Knedlik and Dean Sperry pitch the John E. Mitchell Company the idea for the Slurpee. The company works on a machine to make them;

• 1965: 7-Eleven invests in three Slurpee machines and tests them at stores;

• 1966: The year the Slurpee was introduced;

• 1967: Slurpee machines are in almost all 7-Eleven stores. The drink was known as the Icee before being renamed the Slurpee in May of this year;

• 60,000: 7-Eleven stores worldwide today;

• 10,700: Stores in North America;

• 17: Countries with 7-Eleven stores.

Contact the writer: hmadans@ocregister.com or Twitter: @HannahMadans