Playing scared? KK with lots of pf action

[AmonRaa]

I dont fold KK pf often (which is understandable since mostly I play Nl25) but there are occasions where laydown is good.
Are these 2 hands an example of that?

Full Tilt No-Limit Hold'em, $0.50 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG+1 ($40)
MP1 ($43.45)
MP2 ($49)
MP3 ($28.60)
Hero ($52.55)
Button ($23.75)
SB ($32.65)
BB ($37.15)
UTG ($31.05)

Preflop: Hero is CO with K[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">UTG raises to $1</font>, <font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to $3</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">BB raises to $10.5</font>, <font color="#CC3333">UTG raises to $32.05 (All-In)</font>, Hero folds

Allways nice to see mini raise UTG. When I raise, BB reraises and he goes all in, I had a feeling i'm no good here.

Full Tilt No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO ($49.25)
Button ($44)
SB ($50.35)
Hero ($49)
UTG ($42.05)
MP ($39.25)

Preflop: Hero is BB with K[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, Button calls $0.50, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $2.5</font>, <font color="#CC3333">Button raises to $4</font>, <font color="#CC3333">Hero raises to $8.5</font>, <font color="#CC3333">Button raises to $48 (All-In)</font>, Hero folds.

You'll ask why I miniraised him back. Imo it served 2 purposes: worse hands will call it and AA wont be able to resist and will just shove it in there.

I must admit that in first case i was certain i was beat, in second one not so much. Even though my min raise was designed to bring aces out it sure as hell is hard to fold kings.

Flame away.