Yesterday I was at a table where a guy slow played his AA. He was the SB and every one before him had folded. It was just him and the BB. He just called and the BB checked. He wanted to gain value from his AA but did not go as planned. The player in the BB had 8 3 and hit two pair on the flop. The SB decided that it was time to raise and, after some raise and re-raises, both players were all-in before the turn. Long story short, had he raised as he should have, he would have saved a lot of chips.