It's reportedly Frozen Lemonade Day at McDonalds - only .25¢ from 7am - 9pm! I love frozen drinks - especially when they're are a cheap yummy treat like this!
I was at McDonalds this morning with my 2 youngest while we waited for big brother and sister's dance performance at school, and I didn't notice anything posted about this, so you may have to ask. And it's possible that it's regional, so you may want to call ahead if that's all you're stopping in for.
(thanks Adventures of a Couponista!)