AA against huge turn raise ($25NL)

Sorry for posting so many hands today. Opp was about 19/0/0.5 over 16 hands, too small sample size to really tell I know. What do you do on the turn.

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
9 players
Converter

Stack sizes:
Hero: $26.05
UTG+1: $28.80
MP1: $15.85
MP2: $45.90
MP3: $24.95
CO: $27.40
Button: $18.50
SB: $24.75
BB: $24.90

Pre-flop: (9 players) Hero is UTG with A A
Hero raises to $1, UTG+1 calls, 7 folds.

Flop: Q 7 7 ($2.35, 2 players)
Hero bets $2, UTG+1 calls.

Turn: 2 ($6.35, 2 players)
Hero bets $5, UTG+1 raises to $20, Hero ????

i can´t fold here, tho he seems serious. push and see him flip over AQ or KQ of clubs, if he flat called QQ prf, so be it.

I'd like a better read, but this is somewhere you can lay down AA. This is never a bluff at these stakes and the only hands you beat are strangely played AQ/KK. That being said, I have a lot of trouble laying down AA and never beat myself up over it when I don't.

The only hands that really make sense are things like 22/AcQc/KcQc. You'd think he' d wait til the river with 77/QQ.

I don't have a problem calling here at all, I'm sure I would.