I would call too. I think he would raise AQs or KQ on the flop. It's a sick hand.
@Fuzzy: I hope I am not off-topic and won't get someone mad but I wanna show you a hand played earlier by me, checked nuts on the river, it's not exactly the same, but you should keep in mind that people can make good plays even at 50nl, based on reads and against a maniac they could play a boat like this
UTG: $50
CO: $11.82
BTN: $72.54
SB: $68.53
Hero (BB): $50
Pre-Flop: A

Q

dealt to Hero (BB)
UTG folds, CO calls $0.50,
BTN raises to $2.50, SB folds, Hero calls $2, CO folds
Flop: ($5.75) 5

2

7

(2 Players)
Hero checks,
BTN bets $3,
Hero raises to $10, BTN calls $7
Turn: ($25.75) 9

(2 Players)
Hero checks, BTN checks
River: ($25.75) J

(2 Players)
Hero checks,
BTN bets $60.04 and is All-In, Hero calls $37.50 and is All-In
Results: $100.75 Pot
BTN showed 5
A
(a pair of Fives) and WON $22.54 (-$27.46 NET) Hero showed A
Q
(a flush, Ace high) and WON $98.75 (+$48.75 NET)