[Romulus141]

*Grunch*

You have to at least call here, the pot is too big. He may have been raising a straight that he also has. If he has something like JQs (reasonable for his psuedo SB cold-call given your read and his behavior throughout the hand), you'll win with the better straight. He may have the full house, but, with the pot that big, I call. No point in raising (its marginal at best), since you may lose or split the pot too often.