It must be one of those not quite academic -ologies that was probably named by a non scientist author. Maybe they started out researching animals that had tong

It must be one of those not quite academic -ologies that was probably named by a non scientist author. Maybe they started out researching animals that had tongue horns, but when they didn't find any they branched out and never changed the name of the institute? Either that, or it's a translation of some kind of German idiom that means "It doesn't belong there, something totally natural that is nonetheless out of place" or "It is so disturbing it makes it uncomfortable to talk about as if there was a horn on your tongue".