Unlike a full-blown toothache, this deep stinging sensation is more temporary — usually, it lasts a few seconds up to a few minutes at most. For example, if a boy cries out “Mommy, my teeth are *ngilu*!”, then the mother would **not** immediately make an appointment with the family dentist. Instead, Mom’s first reaction would be “what’s the matter honey, did you just eat something cold or sweet?” It is only if the *ngilu* sensation lasts more than a few minutes that she would start taking it seriously, because a *ngilu* sensation can (**but not always**) lead into a full-blown toothache if it lasts up to an hour or more. Another less common definition of *ngilu* is pretty much anything that can set your teeth on edge or cause the spine to tingle (such as when you are eating sour things, hearing [shrill noises](https://youtu.be/W358HNaJ7Rw), or having teeth filed). This term also exists in [Malay]. In [Tagalog], it is spelled as *Ngilo*. It is possible that the term also exists as a shared cognate in a few other regional dialects/languages of 🇮🇩🇵🇭🇲🇾🇧🇳🇹🇱 which I am not aware of… If you speak any other Austronesian languages, please let me know if the same term exists in your language too!