A postdoc (PD) in our lab was using another lab to do a particular technique that we're not well-equipped for. Such lab-sharing is not uncommon. PD asked a postdoc (SH) in the other lab to point out the location of the hazardous waste container. SH asked if s/he would be made co-author on the paper if s/he did so. PD stared at SH, turned around and returned to our lab.
I had worked briefly with SH in a lab some years ago, so PD asked me if SH is a very funny person. The answer was no, SH definitely did not strike me as funny. PD told me what had happened and asked again, if this was simply a display of dry humor. I again told her I didn't think so.
PD went to the SH's boss to ask the same questions. The boss apologized for SH's behavior. Apparently SH is been having some trouble getting data published lately. I understand that SH is desperate, but authorship to point out the waste container? That's got to be some kind of record.