The teacher asked the students to bring one electrical appliance for“Show & Tell,“ and the next day every kid had something.The teacher asks Wendy: What did you bring?“I brought a Walkman.““And what is it for?““You can listen to music with it!““That’s nice Wendy. What did you bring Kenny?““I brought a ‚lectrical can opener, it opens cans!““Well done, Kenny.Umm, Johnny, I see you didn’t bring anything!““Yes, I did. It’s in the hall.“So the entire class goes into the hallway.“Umm, Johnny, what is that?““It’s a heart/lung machine hospitals use to keep your heart going.““Whoa. What did your father say about you bringing this?““He said, ‚AAAARRRGGGH!!!'“