This is the 6760th most frequent Japanese word.
ビビン
"ビビン" is a shorthand or colloquial term derived from "ビビンバ" (bibimbap), referring to the Korean mixed rice dish.
Here, 'ビビン' is used as an expressive verb referring to feeling intimidated or hesitant towards something.
彼は新しい挑戦にビビンしている感じだ。
He seems to be intimidated by the new challenge.
In this context, 'ビビン' refers to the type of Korean-style mixed noodles typical in cuisine.
ビビン麺は辛いがとても美味しい。
Bibim noodles are spicy but very delicious.
Again, 'ビビン' is used as an informal verb expressing a moment of feeling scared or startled.