'Nipah' is the signature verbal tic of Rika Furude, the blue-haired protagonist of Higurashi When They Cry, the horror-mystery anime adapted from 07th Expansion's visual novels that aired in 2006. She chirps it whenever she is pleased or teasing someone, and fans adopted it as her emblem. The line spread through anime forums, MAD videos and meme edits, becoming shorthand for cute mischief. It sits alongside other iconic anime catchphrases like Mayuri's Tuturu from Steins;Gate, and it still appears in reaction compilations and short-form videos today.