"That's the stupidest combination I've ever heard in my life!"―Dark Helmet expressing the dumb nature of the combination[src]
Planet Druidia was surrounded by an air shield to contain its most precious export. The Spaceballs planned to get past the air shield in order to absorb the planet's ten-thousand years' worth of fresh air for Planet Spaceball, which had become depleted.
King Roland gives up the Air Shield code.
After King Roland gave up the air shield combination (1-2-3-4-5) to the, Dark Helmet and Colonel Sandurz remarked on the stupidity of the combination, going as far as to say, "That's the kind of thing an idiot would have on his luggage!" President Skroob was also surprised at the code, although this was because he had the same combination for his luggage. He promptly realized the stupidity of the code, quickly asking for it to be changed.[1]