Ratjacket is a
reputation or 'jacket' for snitching. Once acquired, a ratjacket is typically
permanent. In the office and other environments where people become well-known to each other, the ratjacket is a form of social leprosy and can lead to
ostracization and worse.
Emma noticed a chilly social
thermostat at
the office. To her horror, Emma realized she had a ratjacket after singing to
management about Jenny and Heather's time-card collusion.