31. There is no iron in the iron you use to iron shirts. Which is, ironically, both ironic and un-ironic.
See also Puns.
See also Appliances.
37. Cat Piano
A piano that prods cats when you press the keys, causing them to yowl. Kittens make up the high notes with older cats doing the low notes. Familiar to anybody who's read PB. Kerr's Children of the Lamp series. See also Cats.
Yet another famous Shakespearian insult. You do a thumbs-up and then put the top of your thumb into your mouth. Bite down. Sick burn. See also Shakespeare.