It's been a while since anyone's responded to this posting so...
If I remember correctly villain had a 1K stack when I arrived at Aria. I had played very few hands and after five hours and was approximately even with a $300 stack.
Villain had been nodding off intermittently.
My long list of dumb things I've done grew when I called the shove.
The only reason I called was that I couldn't believe the shove was a value bet. Had he min-raised (only $30 less than the shove) I would have been more inclined to believe I was beat but would have called anyway.
Recap:
Hero opens to $15 ep with AA
Villain calls in LP, all else fold
Flop: 9s 9d Th ($34)
Hero bets $35
Villain calls
Turn: 4h ($104)
Hero bets $55
Villain calls
River: 2d ($214)
Hero bets $55
Villain shoves
Villain showed KTo.
Chopstick explained to me that my "Please go away" c-bet was logical call for villain. The 1/2 pot turn bet, I'm guessing, in light of the c-bet was also an easy call. Chopstick also explained that my small river bet induced the shove. My guess is that the shove was to fold a slightly better but fearful hand such as AT or JJ+.
Thanks for posting chopstick.