Hopefully they're humourous ones, but they don't have to be XP (remember - PG 13 please)

Here's the one I actually remember from a game called The Island of Dr. Brain. It's a reaaaaally old DOS game (remember those, anyone? XP):

One bright day in the middle of the night, Two dead boys got up to fight. Back to back they faced each other, Drew their swords and shot each other. A deaf police man heard the noise, And came to arrest the two dead boys. If you don't believe my story is true, Ask the blind man, he saw it, too.

Oh, well I failed.

That was funny xD.