Slowplay hand?

[MrBig30]

Is it standard to slowplay a hand like this, or just very fishy? Or does it depend on your style/image?

Party Poker 10/20 Hold'em (6 max, 6 handed) converter

Preflop: Hero is CO with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">2 folds</font>, BB calls.

Flop: (4.50 SB) 5[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

Turn: (2.25 BB) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

River: (2.25 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">BB 3-bets</font>, <font color="#CC3333">Hero caps</font>, BB calls.

Final Pot: 10.25 BB

Results in white below: <font color="#FFFFFF">
BB has Ac 3h (straight, five high).
Hero has Kc Ks (full house, kings full of fives).
Outcome: Hero wins 10.25 BB. </font>