Coffee Mug Knows When You're Going to Burn Yourself

Our father told us that the best way to test whether a steaming cup of anything was cool enough to drink was to just drink it. It wasn't until the fifth time we were in the hospital that we discovered that the man wasn't our father. If we had these heat-sensitive On/Off mugs, which change from the Off position when… » 11/30/07 2:45pm 11/30/07 2:45pm