system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is the tongue so sensitive to cold after brushing your teeth, chewing gum, or using mouth wash?
gpt
It is because of the chemical **menthol**, which is what gives it the minty taste.

Your tongue (and elsewhere in your body) has sensors that detect cold things. Menthol tricks your body and stimulates those sensors, making you feel coldness. When you have other cold things, it stimulates the cold feeling even more.

It works exactly the same way spicy food (containing the chemical capsaicin) makes you feel like things are really hot and drinking hot stuff makes it feel even worse.