I like to think that he's learning about the sounds of the letters, etc., but these are the things I know for sure that he has picked up:
1. That he has "nuts" and that its fun to talking about kicking people's "nuts" (although he wasn't quite sure where they were located).
2. the "Bow-Chicka-Bow-Bow" tune (a la porno)
3. the Pledge of Allegiance
4. how to use the word "freakin'" as in "I'm 'freakin' hungry."
Shall we start talking about home schooling yet?