NL400: AK vs weird line, cbet Flop ok?

[armi94]

Ka was die weird line von BU hier bedeuten soll, direkt c/f Flop?

Known players: (for a description of vp$ip, pfr, ats, folded bb, af, wts, wsd or hands click here)   

Code:

Position(Stack):
vp$ip    foldbb    ats    pfr
af    w$sd    wts    hands



BU (370):
23    39    56    5
0.4    33    22    128

BB (415.50)

2/4 No-Limit Hold'em (5 handed)
Hand recorder used for this poker hand: Texas Grabem 1.9 by www.pokerstrategy.com.

Preflop: Hero is BB with A, K
2 folds, BU calls $4.00, SB raises to $20.00, Hero raises to $68.00, BU calls $64.00, SB folds.

Flop: ($156.00) 3, 6, 6 (2 players)
Hero bets $81