Even though it didn't look like Katy Perry was going to hit back at Taylor Swift on her upcoming album, WITNESS, her new single with Nicki Minaj titled "Swish Swish" says otherwise. 

"Swish Swish" unexpectedly dropped on Friday (May 19) and hears the pop star clearly coming for someone over a '90s-tinged house beatProduced by PJ "Promnite" Sledge, Noah "Mailbox" Passovoy and Duke Dumont, the track hears the star tossing out several disses, admitting that said enemy is calculated, as cute as an old coupon and should retire. The WITNESS cut also samples Fatboy Slim's 2000 hit, "Star 69."

"So keep calm, honey I'ma stick around/ For more than a minute, get used to it/Funny my name keeps comin' outcho mouth/ 'Cause I stay winning/ Lay 'em up like," Perry sings during the pre-chorus. 

Minaj shows up for some guest bars, but they aren't particularly thrilling, especially after contributing to recent releases to almost everyone under the sun, including Major Lazer, Jason Derulo, David Guetta and DNCE. You get where we're going here. 

Neither Perry nor Minaj have confirmed if the song is indeed about Taylor, but the pop titan's close friend Ruby Rose appears to think so. After the track hit the blogosphere, the DJ-turned-actress took to Twitter to share a string of fiery tweets, dissing Perry. Things are getting messy around here. Just take a look below!

Click here to download "Swish Swish" on iTunes.

Photo: Getty Images