Have you been waiting for it? The day that you can bring your own over-sized vessel and fill it to the top with delicious Slurpee? Brain freeze here we come!

7-Eleven will be holding their annual "Bring Your Own Cup" day(s) this year on March 18 & 19, 2016.

Sadly there are a few rules, like no you cannot simply place your mouth under the spout until you can drink no more. (Sorry Deuce!)

Here are the rules from Slurpee.com:

Size matters, Your cup must fit upright through a 10" hole
Keep it clean, Your cup must be food safe
Plug the leaks, Your cup must be watertight
Slurpee for all, One cup per person on #byocupday

Price is $1.50, participation and sales tax may vary.

What is your favorite Slurpee flavor?

Here is one kids version of his "cup" aka massive Slurpee holding vessel.