"F" Is For Grandpa, "B" Is For Grandma
Not only has our two year old taught himself the alphabet, he's figured out the first letter of each of our family member's names. He says, "M is for mommy. D is for daddy," and so on, including for his own name and the name of his brothers. We never set him up to think like this, he just did it.
Then last week, he blew us away. He started saying, "F is for grandpa" and "B is for grandma." Obviously, the letters don't correspond to the first letters of the words "grandpa" and "grandma." Rather, F and B are their first initials. Again, we didn't teach him the association of letters and their sounds, either. Really scary.