何なに君くん

noun

what name; what's-his-name

Used to refer to a young male whose name the speaker cannot recall or does not know, often with a slightly dismissive or casual tone. The suffix 君 is typically used for boys or young men.

• あの何なに君くんって言いったっけ、また遅ち刻こくだよ。

  What's-his-name, that guy, is late again.

• クラスに何なに君くんか忘わすれたけど、背せの高たかい子こがいるんだ。

  There's a tall kid in class, though I forget his name.