蟀谷

Etymology
From, from the way one's temple moves while eating.

蟀谷 appears to be a variant of, the acupuncture point at the temple. First appeared in, volume 39, line 255, "蟀谷在耳上入髮際一寸五分，嚼而取之. 灸三壯，主醉. 酒風發，兩角眩痛. 一云兩目眩不能飲，煩滿嘔出. "

It's not clear why the kanji was chosen, but it was borrowed as it is into Japanese.