pfr of 1 out of 150 hands is 1.5. So this could be 1 or 2 hands. We expect AA-QQ to come about 1.35% of the time, so this is a strong case for folding pre-flop. Since there is already one limper, this would give is about 2:1 to make the call and if we expect the loose blinds to come in, we're looking at 4:1, so we could treat this as a set-maker and fold if the rock gives any substantial action on the flop.