Borometer

Elaine thought it up, but she left it for me to do the work of defining:

bor∙o∙me∙ter \ˈbȯr-ō-ˌmē-tər n [fr. Elaine Fine, composer and musician] (2022) : the little-understood brain mechanism that measures the boringness of a film or a television show <My husband’s ⁓ is functioning well, as evidenced by his falling asleep during this film>

See also humormeter.