You are on a team at work. You have worked your ass off on a project...did all the research, assimilated the material, produced the presentation...etc. Your superior reviews the information, gives you kudos on a job well done. At the final presentation, superior talks about how hard the research was...the time it took to put it together...blah...blah...blah....and does NOT mention your name or effort. Everyone assumes it was her works and she gladly takes 'Full Credit' for the project....a 'Credit Jumper'.....does not even bat an eyelash!
Jane is a stinking Credit Jumper! Didn't even mention her team at the presentation!