childrens' verse considered "inappropriate"

This poem — not the struck out bits — was recited at kindergarten/first grade lunch today by a staff member. 

One bright morning in the middle of the night,
Two dead boys got up to fight.
Back-to-back they faced one another,
Drew their swords and shot each other.
One was blind and the other couldn’t see,
So they chose a dummy for a referee.
A blind man went to see fair play,
A dumb man went to shout “hooray!”

A deaf policeman heard the noise,
And came and killed those two dead boys.
A paralyzed donkey walking by,
Kicked the copper in the eye,
Sent him through a nine inch wall,
Into a dry ditch and drowned them all.

(If you don’t believe this lie is true,
Ask the blind man – he saw it too!)

A parent in the room said it was “completely inappropriate.” They never said why, but during the next seating, the kids told their own jokes and the first three were about shooting animals. Not a word of protest or disapproval was uttered. 

I’m at a loss as to what was inappropriate: the thing is so absurd on its face, it makes the Roadrunner/Coyote cartoons look like Shakespeare. The article at Wikipedia has other examples of nonsense verse that challenge the listener on the meanings of what they hear. Is that not a good thing to teach kids, that language can be intentionally meaningless? 

Among writers in English noted for nonsense verse are Edward LearLewis CarrollOgden NashMervyn PeakeColin WestRoald DahlDr. Seuss and Spike Milligan

A pretty good list there: I wonder if the humorless drudge has ever let her kids read Dr Seuss?