AA on terrible board

[Pat Southern]

Villain has been pretty nitty 20/2 preflop

PokerStars No-Limit Hold'em, $2 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|[color=#C00000]saw showdown</font>

Button ($121.15)
SB ($180.15)
BB ($87.15)
[color=#C00000]Hero ($206.05)</font>
[color=#C00000]MP ($94)</font>
CO ($200.80)

Preflop: Hero is UTG with A, A.
[color=#CC3333]Hero raises to $7</font>, MP calls $7, [color=#666666]4 folds</font>.

Flop: ($17) 9, 8, T [color=#0000FF](2 players)</font>
Hero checks, [color=#CC3333]MP bets $8</font>, Hero calls $8.

Turn: ($33) J [color=#0000FF](2 players)</font>
Hero checks, MP checks.

River: ($33) 2 [color=#0000FF](2 players)</font>
Hero checks intending to fold to a bet more than 20.