Akanbe

Akanbe (あかんべえ, Akanbē), also spelled Akkanbee (あっかんべー, アッカンベー), is a facial gesture often used in Japan indicating sarcasm but also used as a taunt. It consists of one pulling down one's lower eyelid to expose the red underside towards someone else, often accompanied by sticking one's tongue out.[1] [2]

A 19th-century netsuke

Term was first mentioned by early twentieth-century author Katai Tayama, in his 1909 story Inaka Kyōshi (田舎教師, "Rural Teacher"), as a gesture used by the male students in the story. In the story, it gives the etymology as a corruption of akai me (赤い目, "red eye").