Late one night

I actually heard this from a friend, so I don't know who originally wrote it.

Late one night in the middle of the day,
Two dead boys went out to play.
Back to back they faced each other,
Drew their swords and shot each other.
A deaf policeman heard the noise, and went to rescue the two dead boys.
If you do not believe this lie is true
Ask the blind man, he saw it too.