[comhood]

I usually raise 3-4xbb in that spot, and hence usually gets normal reraises on top. Now, you raise from the button, coming in for 6bb, a large raise (trying to pretend a steal?), looking like you want to take the pot down without resistance. Since you have already build the pot up large, it looks like SB just wants to make sure he can get all of it into the middle, either by you calling preflop (making the pot 550+550+50=1150) so he can make a semi-pot sized bet OOP and get you out, or he frustrates you to shove it in already. Either way, it looks like he is trying to make you stay in - and remember his position, what hands would a random player like to play a big pot with OOP(cause he really looks like he wants to get to the middle of it!)? Aces and Kings, I'd say.

Readless, I'd say its a fold, but a tough one. Correct me if wrong..