ahegao

A facial expression where the eyes are rolled up, the mouth is open, and the tongue is sticking out. Ahegao is literally translated as "ahe face", where "ahe" (also "aheahe") is a sound effect for wild moaning.
This expression is usually (but not always) sexual. It can also indicate craziness or drug influence.
Frequently features the character biting their tongue, blushing, drooling, sweating, or raising their eyebrows. Often accompanied by the character making a double V gesture.