Unless you're Susie Dent from Countdown, the origins of some of the most common expressions and phrases in the English language are a complete mystery.
Soccer AM/MW had its own, nobody knows quite how it came about, but its iconic status has never been in doubt. So, for the latest trivia question we ask it once more...
This week I'm at a football ground. This stadium was opened in this Millennium, and the first team to win a league game here played in blue.
This ground, which isn't in the Football League, saw its record attendance in a game against Leyton Orient. Oh, and there's a big bronze statue outside this ground too.
Do you know where Nobes is? We'll be revealing his location on September 25.
And try playing the Mastermind music, as the lads did on the show, whilst you wonder.