A school teacher asked her class what they thought was the most important invention ever. Kids came up with the usual answers..."telephone because you can call anyone anywhere in the world, cars because you can drive places much faster than any previous type of transportation, etc."
One little kid thought about it for a few minutes and said, "teacher...it's gotta be 5he thermos vacuum bottle."
She looked at him and asked him why he thought that.
"Well, teacher," he said, " it keeps hot things hot and cold things cold."
"OK," she said...
"But teacher, how does it know?"
Thank you, thank you! I'll be here all week. Order the fish...and don't forget to tip your server.