Luuuuuuuuuuke.....I am your father

Well, we had an interesting hurdle to tackle with the Bear last weekend.  He's been known to say "You're not my friend!" or "You make me sad!" when he isn't getting his way or gets in trouble for his mischief.  ...Saturday...it turned in to "You're not my FATHURRRR!"

It was actually quite comical at first...and when he'd pull that line on me, I'd say "That's RIGHT! I'm NOT your father!" and he would quickly rebuttle, "Yah you are!". 

Where do kids pick this stuff up?!