One of the weirdest plays I've seen in awhile

[HighStakesPro]

Look at the button's hand.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP3 (t1380)
CO (t1610)
Button (t1530)
SB (t1480)
Hero (t1500)
UTG (t1500)
UTG+1 (t1500)
MP1 (t1500)
MP2 (t1500)

Preflop: Hero is BB with 4[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
<font color="#666666">5 folds</font>, CO calls t20, Button calls t20, SB completes, Hero checks.

Flop: (t80) 3[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, Hero checks, <font color="#CC3333">CO bets t20</font>, Button calls t20, SB calls t20, Hero folds.

Turn: (t140) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, CO checks, Button checks.

River: (t140) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets t40</font>, CO folds, Button calls t40.

Final Pot: t220

Results in white below: <font color="#FFFFFF">
SB has Kc 3c (two pair, kings and threes).
Button has Ah Ad (three of a kind, aces).
Outcome: Button wins t220. </font>

What is going on here???

[DannyNSandy]

No clue your guess is as good as mine.

[Mingdu]

all those flush and straight possibilities scared him

[AragornX151]

He was worried, with those spades being wild cards and all. Someone could have had the Royal Sampler.

[akb]

But limping with aces on the button? And flat calling the rainbow flop? Unless you guys are being sarcastic....lol

[Mingdu]

... and the purple horseshoes ...

[Javanewt]

Button and SB are buddies or the same player, lol. Pathetic.

[aholthaus33]

I probably could have found a raise at some point in that hand, just maybe.

[Bakes]

bbv

[Fiksdal]

Expert slowplay. SB got taken to valuetown here IMO.