ジュポジュポ

adverb, adverb taking the 'to' particle

slurp-slurp; suck-suck; sound of blowjob suction

Onomatopoeia for wet sucking or slurping sounds, often used in explicit sexual contexts to describe fellatio. Can also appear in non-sexual contexts for any repeated sucking noise.

• 彼かの女じょはジュポジュポと音おとを立たててアイスキャンディーをしゃぶった。

  She slurped on the popsicle with a wet sucking sound.

• アダルトビデオでジュポジュポという音おとが聞きこえた。

  I heard a slurping sound in the adult video.