It's basically a way of sucking up to someone and it's almost as annoying and shallow as when girls post shit like omg stop being so perf! and then of course the required response is no that's you bb ð and it goes back and forth like that.
Temperature receptors. The sensory system involved in perceiving the changes in skin temperature begins with free nerve endings found in the dermal and epidermal layers of skin that can be functionally classified as cold and warm thermoreceptors.
The better known of these is the ear, which operates very much like the ears of other vertebrates. The second system is the lateral line, which consists of a series of receptors along the body of the fish both in canals and on the surface. Together, the two systems are known as the octavolateralis system.