Back once again in honor of its birthday, 7 Eleven is having their Slurpee Bring Your Own Cup Day for August 19th and 20th.

According to 7 Eleven,   They are allowing Slurpee fans to bring in their own cups on August 19th and 20th between 11 a.m. and 7 p.m.

For $1.50, you can fill up any container you like as long as it fits upright through a 10" hole.   So if you've got a wacky huge container that fits the guideline bring in it and enjoy your favorite Slurpee.  You are also only allowed one container and it must be leak proof.

Check out more details at Slurpee dot com.