6H AK vs. UTG allin

[The Yugoslavian]

Seat 6 is the button
Total number of players : 6
Seat 1: UTG ( $6379 )
Seat 2: CO1 ( $1592 )
Seat 3: Hero ( $2700 )
Seat 6: button ( $2440 )
Seat 8: SB ( $3223 )
Seat 10: BB ( $3666 )
Blinds(200/400)
** Dealing down cards **
Dealt to Hero [As Kc]
UTG pushes allin
CO1 folds.
Hero ???

UTG hasn't pushed a ton or anything and has built stack being too loose preflop (but not like 95o ZOMG ridiculous) and hitting a couple of big flops.

What do you do here? Please grunch before looking at it with tools.

[img]/images/graemlins/laugh.gif[/img]

Yugoslav