AAxx hand pair on board?

[Percussion]

Push? Check/Fold? Check/Call?

PokerStars Game #1902216974: Omaha Pot Limit ($0.25/$0.50) - 2005/06/15 - 00:12:28 (ET)
Table 'Meta' Seat #9 is the button
Seat 1: doubleD2313 ($10.50 in chips)
Seat 2: Winston8 ($20 in chips)
Seat 3: nines929 ($23.75 in chips)
Seat 4: catchdeez ($42.25 in chips)
Seat 5: Mr Fever ($19.35 in chips)
Seat 6: Percussion ($78.45 in chips)
Seat 7: EvilDrSluggo ($56.30 in chips)
Seat 8: stonekillr ($72.40 in chips)
Seat 9: darwin1 ($127.50 in chips)
doubleD2313: posts small blind $0.25
Winston8: posts big blind $0.50
Mr Fever: posts big blind $0.50
*** HOLE CARDS ***
Dealt to Percussion [As Ad Ks 6h]
nines929: folds
catchdeez: calls $0.50
Mr Fever: checks
Percussion: calls $0.50
EvilDrSluggo: raises $2.75 to $3.25
stonekillr: folds
darwin1: folds
doubleD2313: folds
Winston8: calls $2.75
catchdeez: folds
Mr Fever: folds
Percussion: raises $11 to $14.25
EvilDrSluggo: calls $11
Winston8: folds
*** FLOP *** [Qd 4s Qc]



Now it is my turn, and it is very likely he has KKxx with a queen, or AAxx with a queen or even god forbid QQxx :P
Any thoughts?