The feeling experienced in your mouth when eating soup that hasn't been microwaved fully.

or

The feeling on your body when swimming in a lake and a hot flush of water rushes past you.

Got the covid-19 vaccine

Diarrhea, Montezuma’s Revenge, the excrement of feces after a long night of Mexican food and Natural Light. When one has a cold this is the only warming part therein. Like removing the drain plug at the jiffy lube, 10-W30 is just pouring out. The violent fury from ones rectum. Pile it on high and deep.

The feeling you get when some of your body is really hot and some of it is freezing.