Actually this phenomenon is very real. I experienced it all my life and didn't know others did as well, let alone have a name. I remember the first time I felt it - I was in the 6th grade (in the 80s), and a girl needed a table to write on while outdoors, but didn't have one, so she asked to use my back. I had an immense wash of tingles that felt like shocks and glitter traveling from the top of my head all the way down my spine. It was one of the most pleasurable things I had ever felt. It seemed really weird at the time. I also got the same feeling from the electric shaver on my neck at the barber, and the rhythmic strumming of train wheels on a track.

Anyway, this is very real, though not everyone experiences it. For those who don't, like yourself, it seems like a bunch of BS.