I'm an assistant and one of my main duties is to prepare and process expense reports. When the reimbursement comes in, I get an email from our finance department and I go grab the check to give to the employee. It is fairly common knowledge that the checks are actually cut at a different office and are sent here. I can't give a person their check until the finance department physically gets it from Other City (which is several hundred miles away).
One afternoon, I got an email from a guy I work with. He wanted to know if a check he was expecting was going to come in the next day. If so, could he get it today?
We do have such a relationship that allowed for my response of "Well, only if you have a time machine." He laughed and said something like, "Yeah, I guess that wouldn't really work."