Kyrie eleison

Kyrie eleison is the Latin transliteration of the Ancient Greek phrase Κύριε ελέησον, which means "O Lord have mercy". In Modern Greek it is used in a non-ecclesiastical sense as an exclamative similar to the English "oh my God/gosh!", "what on earth!"

I only learned this on Sunday when I was searching for the Greek word for "mercy."

I geek for Greek.

...and cuckoo for cocoa puffs.