Some chick my cousin was hanging out with once called some random waiter "senpai"

I wonder if any Japanese people ever feel weird saying the word baka after everyone kept making it a meme

I'm not an expert but I'm 99% sure that's a misuse of the term "senpai."

Also, question for the artist formerly known as "Boiled Banana:" is your new name a reference to something?

(Yes it was a misuse of "senpai"
No "Acid_Freak" is not a reference to anything, i made it up as a name of a track on music generator for ps1, one of the sounds had the word "acid" in it and it was one of the main sounds foe the track i was making, so i decided to name it acid freak, then around maybe a year later i decided to make a bandlab account and the first name that came to mind was "Acid_Freak".

Senpai is like someone above you. A mentor or someone you look up to.
I could be wrong