köken: From English null pointer. In 2002, a thread on 2channel was created called Null(ヌル)Pointer(ポインター)Exception(エクセプション)を「ぬるぽ」と呼(よ)ぶスレ (Nuru-Pointā-Ekusepushon o “nurupo” to yobu sure, “Thread where we call NullPointerException "nurupo".”); the OP was Monā (モナー) saying nurupo. The first response was more Shift_JIS art, depicting Monā being whacked in the head by Morarā (モララー) with a gah!.