happy-clappy
adj.— «And they have those happy-clappy waiters and waitresses who seem to love to sing birthday cheer, but appear to know next to nothing about the menu.» —“Olive Garden no delight” The Pantagraph (Bloomington, Illinois) Dec. 14, 1990. (source: Double-Tongued Dictionary)
Further reading
Brian from Lafayette, Indiana, wonders why chicken is abbreviated CHX in the restaurant industry. Using X as a substitute or shortener has a long history. Medieval scribes sometimes drew a line through the final stroke of an abbreviated word. This...
A listener in Lorain, Ohio, wonders about the origin of the terms happy and happiness. Both come from an older word hap, meaning “chance” or “luck,” also the source of happen, mishap, hapless, happenstance, happy-go-lucky, and perhaps. Language...