<prompt> Human: I am selling my microphone off Craigslist, when a person contacts me over email and asks to buy it, but cant arrange pick-up for it. I agree to being mailed a check to myself, and that I will arrange pick-up with someone else in my area for the microphone. Fair enough... But the buyer has asked me to give the remainder in the check to the friend who is picking up the microphone, as in, writing a larger check, so that this friend can pay in cash for other things.I didnt think this was weird until I saw that the check is over 1400... The item is 75. I have not cashed the check yet its a cashiers check. Has anyone heard of this? Should I be worried? What should I do?EDIT: Thank you all very much, this sounds like a common occurrence, and a scam. Thank you for your patience, as it sounds like this was commonly asked and answered before. I will be going to the police during daylight hours and will not cash the check.  <response>: Scammy scammy scam.If there is a police non-emergency phone line, call them. Ask if they want details and evidence from a cheque scammer. Print out all your emails and keep that cashiers cheque and give it to the police. 