Red Hot Chili Peppers fans are for the most part chill people, they like their music taste. They usually tend to listen to only the RHCP for months on end, without listening to other music. It can be a little annoying hearing can't stop on repeat whenever your near them.
They also tend to listen for the bass in the songs, and is probably a bass player themselves. But eventually the loop of californication and zephyr song will brain wash them and they won't know when one song ends or one begins. And they make complete tonal shift and barely listen to them after that.
Example of a RHCP fan in sentence form:
My friend is a Red Hot Chili Peppers Fan, and he CAN'T STOP talking about Flea!