This one is definitely a nonsense poem from X.J. Kennedy’s The Phantom Ice Cream Man: More Nonsense Verse. It did make me giggle a bit, though.
I swung and swung at empty air
And when I heard the umpire
Behind me shout, “Strike three – you’re out!”
My bat turned to a vampire.
The whole team had to pry it loose.
Poor Ump looked sorta flat.
Now ever since, my bat and I
Walk every time we bat.