'Green, green, green!'

"'Green, green, green,' he said; and I did. Green, green, green."

So said John Lennon as Private Gripweed in 'How I Won the War,' 1966, directed by Richard Lester, also featuring Michael Crawford, in a hit and miss early anti-war feature. I always liked that phrase, though I have no idea what it means. Extra: A green engine. Don't say I don't try.