paging "uncle phil"

A few days ago Aiden decided that he has an "Uncle Phil" and he references him multiple times a day. Uncle Phil, although invisible might just be in the running for Aiden's favorite uncle because he's spoken of quite often around here. I'll ask him "who is uncle phil" and he'll say "dada's uncle". I've also asked him "where is uncle phil?" Since he typically talks about uncle phil while we're in the car, uncle phil automatically appears in the car in front of us. Apparently, Uncle Phil went to california this weekend too? I'm stumped...I don't think we know anyone named Phil. Where did this random uncle come from? And how in the world did he come up with the name "Phil"? This boy is crazy....but oh so cute!