Call it a “tingletron”, or a “relaxacet” or something like that if you must, but please don’t call it “orgasmatron” (personally, I think “head massager” or “scalp massager” works just fine). I have one, and yes, I do agree that they are awesome btw. I also find that every time I discover a new massage toy/tool it always triggers me just to look at it.
The French word 'frisson' signifies a brief sensation usually reported as pleasurable and often expressed as an overwhelming emotional response to stimuli, such as a piece of music. Frisson often occurs simultaneously with piloerection, colloquially known as 'goosebumps', by which tiny muscles called arrector pili contract, causing body hair, particularly that on the limbs and back of the neck, to erect or 'stand on end'.