Okay, face palm and groan over that one. You did keep the rhythm and rhyming with this poem. It definitely had good imagery. On the other hand I didn't need the imagery of a short, possibly stout man whizzing in an old, grayish, unwashed toilet bowl.

I would take out the word 'that' on the second verse, second line. It had a better 'sing song' effect with out the extra word. "and hoped a restroom was near," just seemed to come off the tongue better. It is after all just my opinion, take it or leave it. It does have eight syllables like the second line in the first verse, so either fits okay.
Thanks for sharing.
love, LinnAnn