I came across 1 anonymous verse online a while back, the first verse below, and added the second verse in response.
Yesterday, upon the stair,
I met a man who wasn't there!
He wasn't there again today,
Oh how I wish he'd go away!
Tomorrow, below the sky,
I'll meet a gal, who's never by!
She won't be there the next day too,
I wonder when she will come through!