Unless SB is a nit, I am calling here. You are only behind to QQ+, which is 1,5% of hands, and most people are rejamming way wider than that. The guy behind is a further incentive to get it in, because if he had QQ+, he would not just have called. So against him you are always ahead, and he will either fold leaving dead chips in the pot, or call which allow you to potentially triple your stack.
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