Solved:

It was Snobbism. I am delusional and my mind has been playing tricks on me

———————————————————————————————————

There has been a song haunting me for about 6 hours now!

After some peer review my colleagues (fellow fans) came to the conclusion that the song was

"Becoming Potato" by Neru, but I could have sworn it's not??

The melody and song was about the same, music, not lyrics, and the MV was a mischievous looking person with a top hat swinging a hammer around.

Am I tripping or not? Please help me out!

Edit: (I post it here because I am super sure only Kagamine Rin sung it, but this may just be delusion again. I listened to the song about 7 years ago and it is NOT Becoming Potato)