Armpit-mometer

Tonight Cooper was shivering on the couch and I thought that he might have a fever and Will said, "Oh, yeah, we need to put something in your armpit!" I didn't know what he was talking about until Cooper started talking about thermometers and temperatures and I said, "Oh, yeah Will, we need to put the thermometer under your armpit." We started a discussion about places where you could put the thermometer and how you could find out your temperature and Will said, 'yeah, you just use an armpit tool." And I said, "It's called a thermometer." And Will said, very excitedly, "Oh, I know! An armpit-mometer." It was hilarious at the time - a much-needed chuckle at the end of a long day.