I'll start: Moses supposes his toes's are roses, but Moses supposes erroneously. Now Aaron, he knows's his toes's aren't roses as Moses supposes his toes's to be.
Chicks with bricks come. Chicks with blocks come. Chicks with bricks and blocks and clocks come. Dr. Suess Fox in Sox
Been a while, but I thought of one to add; A tutor who tooted the flute tried to tutor two tooters to toot. Said the two to the tutor, "Is it harder to toot or to tutor two tooters to toot.?"
The real fun was when students asked me if I could spell the long chemical names. Of course I could. But if I got them wrong, how would they know? BTW, I can indeed say polyethylene terephthalate 5 times fast.