If it is still sealed, open it up and give it a sniff. If you regularly eat tofu, your nose will tell you for SURE if it's OK or not. Those dates are guidelines for the grocery stores moreso than the consumers. While it is still a good practice to adhere to them, sometimes it's overkill and CYA from lawsuits.
yes please dont eat something thats is THAT old...trust me, I know...I was sick for two weeks straight (couldn't eat anything) after having just a tiny bit of old stuffing...