You are a fish (or any kind of other species) at Bikini Bottom, you see an invitation flying over from the sea sky, everyone has got the invitation. It says

Come over to Atlantis for a party with me, my cousin Minds, and Triton for an amazing party you’ve ever seen. XOXO 💜 Minerva

As you were curious to see what it is like, so you go to Atlantis to go there, you see a mermaid swimming around, she was singing a party-like song. Also she is like based off of Kesha :)

as she finishes singing, she walks up to you

“Hey there sweet cheeks, enjoying the party here?”