McDonald's has two specialty shakes that are geared toward holidays — the Shamrock and the Egg Nog shake. While the Grimace shake isn't bad, it's in third behind the other two. Joe Mason ...

McDonald's has two specialty shakes that are geared toward holidays — the Shamrock and the Egg Nog shake. While the Grimace shake isn't bad, it's in third behind the other two. Joe Mason ...

The character has a relative, Uncle O’Grimacey, also used in McDonald’s advertisements to promote the Shamrock Shake, a green-colored, mint-flavored drink for St. Patrick’s Day.

Are Shamrock Shakes unhealthy? Yes. They're served at McDonald's and it's not a salad, so they do have a lot of calories. According to McDonald's, a small has 460 calories with 63 grams of sugar ...

That said, it has an orange-cream flavor and is refreshing on a hot day. In the pantheon of McDonald's shakes, it's not the Grimace Shake, Shamrock Shake or Egg Nog Shake, but it has a better ...

The meme is not under McDonald’s control, but this level of engagement and enthusiasm can’t be bought; the Grimace Shake meme is free advertising, a viral marketing campaign led by the public.