100NL, my AA was just turned into a bluff catcher

[pokerfan]

villian is a 18/12/2 regular( his 3 bet% is overall 3% and river AF is 2.3) My notes on this guy is he overbet with nuts on the river. He probably views me as a TAGish player. Damn it! Should i make a nitty fold based on his bet sizing and my note? My UTG range is so strong in this 3 way pot that i cant even think about any worse hands on his part at this point.
No-Limit Hold'em, $1.00 BB (7 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

SB ($122.10)
BB ($328.80)
Hero (UTG) ($145.15)
MP1 ($31.25)
MP2 ($126.45)
CO ($40.55)
Button ($100)

Preflop: Hero is UTG with A, A
Hero bets $4, 3 folds, Button calls $4, 1 fold, BB calls $3

Flop: ($12.50) 2, 3, 2 (3 players)
BB checks, Hero bets $8, 1 fold, BB calls $8

Turn: ($28.50) 4 (2 players)
BB checks, Hero bets $18, BB calls $18

River: ($64.50) 7 (2 players)
BB bets $49, Hero ?

[BankItDrew]

Retarded line by villain and looks like a better hand but I snap it off anyways.

[badgers]

meh I think you're toast here a lot. This looks like a fold but it's hard because aces are pretty and his line is wtf. I probably snap this off in play too but I think that's a leak...

[grindinginnj]

I pay him off!

[Deanglow]

Meh when regs take lines that make no sense I guess call

[rpm]

why is this a weird line?

i cant think of any hand a decent 100nl reg would c/c two streets with and turn into a bluff on this board. as you mentioned, your hand is pretty transparent unless you regularly 2-barrel AK or AQ. from his perspective you must have QQ+ imo, and shoving into that range on that river is pretty questionable to anyone with a brain. i think i have to fold here.