S is for Shamrock Shakes — St. Patrick’s Day A-Z

Around since 1970, the Shamrock Shake is McDonalds' Irish-themed March milkshake, star of many fond childhood memories.

Much to our dismay, the shake sort of disappeared in the 90s, but has made a recent comeback, though Uncle O'Grimacey (pictured) has been phased out of the advertising campaign in more recent years. Not sure why, because he rules.