Thermometer?

Yesterday evening Andy was not feeling well. He had asked me if I thought he had a fever and I said that it was a possibility so maybe he should take his temperature. He then asked where the thermometer was. I told him he should look in the bathroom cabinet. After a few minutes he said I'm dying my temperature in only 36 degrees. And I thought well that is strange. Then he said I have never saw this thermometer where did it come from. Then it occurred to me that he had used Eli's thermometer from the hospital to take Eil's rectal temperature. He earned the name butt mouth for the rest of the night:)