How about this then.
The year is 1980. Sat around the breakfast table at an old friends house. Asked what was was wanted for breakfast. Suggested Weetabix would be nice. Box of Weetabix is produced. Pour milk on Weetabix. Horrible smell ensues. Look at Weetabix box closely. Picture of Bobby Moore in red jersey holding golden cup aloft beneath banner proclaiming "England world cup winners! Collect 3 box-tops to claim your free "World cup winners badge"!
So how old was the box, then?
Englishman.