Live NYC - 25/50 with trips

[rock1]

villian has generally played pretty solid although in the past he has had tendencies to get out of line...i start hand with about 13k and villian covers

hand is straddled to 100, one limper to me on button with K [img]/images/graemlins/diamond.gif[/img]8 [img]/images/graemlins/diamond.gif[/img] and i limp...small blind and big blind complete...5 to the flop

A [img]/images/graemlins/spade.gif[/img]8 [img]/images/graemlins/spade.gif[/img]8 [img]/images/graemlins/club.gif[/img]

checked to me and i bet 400...villian in small blind calls and everyone else folds...

turn 7 [img]/images/graemlins/heart.gif[/img]...villian check calls my 1200 bet after some thought...

river: J [img]/images/graemlins/diamond.gif[/img]...villian slowly checks...i think for 30 seconds and bet 3200 (leaving me with 8000 behind)...villian thinks for 30 seconds and quietly says all in (he covers me)...Is this ever a bluff/do you call this bet?