Modisetting Defined; the art of being absent for undesired duties, though appearing as if you fulfilled those duties while your colleaguescomplete those undesirable tasks.
Tom had to work the duty desk because he was being modisetted by a fellow employee who failed to show up. Modisetting is common in his workplace.
Someone trying to be something they are not. A poser cowboy saying they are a cowboy but they are not. Someone who trys to be a cowboy but has never riden a horse or been on a farm.