Although it is difficult, you can rub two Cool Ranch Doritos together to start a fire. All potato chips are flammable from the vegetable oil they are cooked in. They are made mostly of hydrocarbons and fat, both being highly flammable.
I wouldn't be worried about the chips catching on fire while in the bad because it would take a lot of friction and heat for them to catch fire. While these specific chips are known to catch fire because many people have tested them, I'm sure other chips can also catch fire when rubbed together.
There was a time when people believed that the different sections of the tongue are meant to taste different flavors but according to research, this is not true. There are some parts of the tongue that are more sensitive to certain flavors but the whole tongue can taste the different flavors that you will place in your mouth.
This is because of the taste buds that you have all over your tongue. This is responsible for your sense of taste. There are different tastes that you may experience. The first four are common: sweet, salty, sour, and bitter. The fifth taste is considered to be umami. Take note that some people may taste more flavors than others.