He hasn't gone away, you know - after becoming an Internet legend, Uncle O'Grimacey is returning for McDonald's Shamrock ...

McDonald's fans, it's time to celebrate! Grimace is back and is bringing the Shamrock Shake along with him this season.

Enjoy a Shamrock Shake: For every Shamrock Shake purchased from Feb. 10 to Mar. 23 at participating McDonald's, 25 cents will ...

Together, Grimace and Uncle O’Grimacey are supporting Ronald McDonald House Charities (RMHC) and their mission to keep ...