Ahegao
Quick Definition
A Japanese term for a facial expression of extreme pleasure, often exaggerated in hentai, characterized by rolled-back eyes and a protruding tongue.
In-Depth Explanation
The ahegao face is one of the most iconic visual tropes in hentai, used to signify intense arousal or orgasm. It serves as a clear visual cue for the character's state of ecstasy, often breaking from the normal art style for comedic or dramatic effect. This expression is frequently associated with mind-breaking or intense stimulation.