U Should Not Be Doing That

"U Should Not Be Doing That" is a song by Australian pub rock and punk band Amyl and the Sniffers. The song was released on 21 May 2024 as the lead single from their third studio album Cartoon Darkness.

Amy Taylor said,"Lyrically it's pretty self-explanatory... it's also in a way poking fun at the shock that people still feel at a little bit of skimpy clothing, and the bitchy high school way that the music community still is but it mainly makes me laugh. It's unconscious and meant nothing at the time of writing it but now I think it's a comedic way of rubbing the dog's nose in its own dog piss after it peed on your favourite rug or something."

The song placed at number 34 on the Triple J Hottest 100, 2024

At the APRA Music Awards of 2025, the song won Song of the Year. At the AIR Awards of 2025, the song won Independent Song of the Year. At the 2025 Rolling Stone Australia Awards, it was shortlisted for Best Single.

At the 2026 Grammy Awards the song is nominated for Best Rock Performance.