CorTemp Core Body Temperature Monitor. Luckily we’re finding it less and less necessary to determine our digestive tract temperature as we get older, but in earlier times it was something of a ritual as we left the house to go partaying. We used to joke about the hottest guts in the room, you know, junior stuff like that. Well for those of you still dating, this is your machine. Just swallow the [white] pill and record the temperature readings as it travels through your system Am I hot or not? You betcha! $2500.00 with 10 pills included.