Re: AA against very weak opponent. 50NL.
 

I can't fold here. Normally I am raising the flop as he could have KK-77 and think his overpair is good.

I definitely overplay my aces sometimes and this my be one of them.

Re: AA against very weak opponent. 50NL.
 

No way he is raising his draw on the flop, not from description you gave of him. I would surely put him on pocket 77's, if he called the flop bet and fired on turn I would put him on AdKd, but because of the flop raise I say trips all the way. GL

Re: AA against very weak opponent. 50NL.
 

You really really need to threebet flop.
It's not like you have any idea of how this player is post flop after 170 hands. You have probably seen him being in a spot such as this flop...what, 10 times tops, during this session.