Riddlez #1

When you see it, you won't buy it, when you buy it, you won't use it, when you use it, you won't know it, what is it?


A coffin. You see a coffin, you won't buy it (who would buy a coffin when their still alive?), you buy a coffin, you won't use it (what's the use of a coffin if your not dead yet? somebody else?), you use a coffin, you won't know it (dead already!)