O writers of song, verse, and drama,
relators of life’s joy and trauma,
lest your meaning be missed
never fail to enlist
a strategically placed Oxford comma.
What’s a preposition?
Perhaps you wish you knew.
That word contains a second one,
providing quite a clue.
For on or in or under
and behind, beneath, below,
all tell us just where something is—
Now you know!