call behind with nut boato n river

[boost]

I thought this was an easy call at the time, still do, thoughts?

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

SB ($27.98)
BB ($98.50)
Hero ($171.69)
MP ($159.93)
CO ($78.15)
Button ($230.94)

Preflop: Hero is UTG with T, A. SB posts a blind of $0.50.
Hero raises to $3, MP calls $3, 2 folds, SB (poster) calls $2.50, 1 fold.

Flop: ($10) Q, Q, A (3 players)
SB checks, Hero bets $7, MP calls $7, SB folds.

Turn: ($24) Q (2 players)
Hero checks, MP checks.

River: ($24) 7 (2 players)
Hero bets $15, MP raises to $66, Hero calls $51.

Final Pot: $156

[boost]

durr... I had the second nut boat.. but still heh..