100NL: Why do i want to fold KK pf?

[futuredoc85]

villain is 13/7 over 350 hands [img]/images/graemlins/frown.gif[/img] his tiny 4-bet makes me want to projectile vomit

PokerStars No-Limit Hold'em, $1.00 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP2 ($104.50)
MP3 ($30.30)
Hero ($100)
Button ($98.50)
SB ($74.50)
BB ($70)
UTG ($158.60)
UTG+1 ($124.10)
MP1 ($67.30)

Preflop: Hero is CO with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">UTG raises to $3</font>, <font color="#666666">3 folds</font>, MP3 calls $3, <font color="#CC3333">Hero raises to $15</font>, <font color="#CC3333">Button raises to $35</font>, <font color="#666666">2 folds</font>, UTG folds, MP3 folds, Hero pukes and????