After disappearing from the public eye for roughly 40 years, Grimace’s Irish, green, Shamrock Shake-slinging uncle has returned to McDonald’s. Uncle O’Grimacey, who was introduced as a ...

Grimace and Uncle O’Grimacey are welcoming the Shamrock Shake back to restaurants nationwide on Monday, Feb. 10 Sabrina Weiss is the Editorial Assistant of PEOPLE's food department. She writes ...

Uncle O’Grimacey, Grimace’s Irish uncle ... “I can’t stop crying we did it kids,” one person wrote. “If I don’t get to meet these two before I die kill me again,” another quipped.

In social media videos, purple mascot Grimace visits Ancestry.com and discovers a connection to his Irish uncle. The two unite in-person after a video call, with O’Grimacey announcing the Shamrock ...