What does the word Neener mean?

"Neener" is a playful, teasing expression often used by children to mock or taunt someone in a lighthearted way. It typically accompanies a gesture or chant, like "neener, neener, neener." The term is not formal and is more commonly found in informal, spoken language rather than in written contexts. Its connotation is usually harmless, meant to convey a sense of fun rather than serious insult.