why didnt he raise the river?!?! (little content)

[kgrad5]

live 2/5 at brantford, im dealt 6 /images/graemlins/spade.gif 6 /images/graemlins/diamond.gif in mp, utg limps, utg+1 limps, fold, i limp, fold, limp, raise, a call from the blinds i think and eveyrone who limped stays, the pot is 7 handed for a raise.

flop comes 3 /images/graemlins/diamond.gif 6 /images/graemlins/heart.gif k /images/graemlins/club.gif

utg bets, i raise, some folds, BB reraises, i cap. 4 of us see the turn

turn comes k /images/graemlins/heart.gif , utg bets, i raise, called by BB and UTG.

river comes 6 /images/graemlins/club.gif checked to me, i bet call call,

UTG shows A /images/graemlins/diamond.gif K /images/graemlins/diamond.gif for kings full and he DIDNT RERAISE THE RIVER!!@@$@!

BB shows A /images/graemlins/heart.gif A /images/graemlins/spade.gif
and i drag a monster pot with quad 6s

[Alobar]

cuz its a live game, and hes a timid little mouse. That or he figures its getting split anyway so he wants the other guy in the hand to overcall (which is actually pretty smart)