<prompt> Human: I got a FedEX overnight package with nothing but a cashiers check inside. I dont know the sender of the check but it was addressed to me. The check is from Mercantile Bank of Michigan a bank that Ive never heard of but the package itself is sent from California. I understand that this sounds like a scam but I fail to see how someone can profit from sending me a fake check. I see that cashiers checks are backed by the bank but are often forged and may bounce weeks later causing me to have to pay the bank back if I withdrew any of the funds. Would it be possible for me to cash in the check and let the money sit for a couple months and then use it? Any tips on what I should do about this situation?  <response>: Any tips on what I should do about this situation? dont deposit it or cash it. 