OK, not actually a poem but sort-of-rhymed doggerel, but David Bukszpan’s Poem So You’ll Know All 101 Two-Letter Words is fun and might even prove useful for some of you. My favorite line is the second of this couplet:
QI, Scrabble’s most popular word, is just ki spelled with a kue,
and like qat (or your cat) it doesn’t need U.
And the line most relevant to a recent LH post is “DO, like the deer, is the first tone you hum.”
Completely irrelevant, but I can’t resist sharing it: Aulus Gellius quotes Herodes Atticus as saying of a man who claimed to be a philosopher “Video barbam et pallium; philosophum nondum video” (I see a beard and a cloak; I don’t see a philosopher yet). Hence the proverb Barba non facit philosophum, “A beard does not make a philosopher.”