パコパコ

noun, adverb taking the 'to' particle, adverb

sound of typing on a keyboard

Mimetic word for the rapid, light tapping sound of typing on a keyboard.

• 彼かれはキーボードをパコパコと打うっている。

  He is typing away on the keyboard with a pitter-patter sound.

noun, noun or participle which takes 'suru'

having sex

Slang, onomatopoeic expression for sexual intercourse, often used in casual or vulgar contexts.

• 隣となりの部屋へやからパコパコしてる音おとが聞きこえる。

  I can hear the sound of them having sex from the next room.