An actress that is much older than the character that they are portraying. In films often resulting in movements by the actress that would be believable by a younger woman, but the older actress cannot successfully preform the actions drawing attention to the actress' deficiencies.
In Taken, the movie, Maggie Grace is playing Kim, after she is rescued she runs through the airport toward her mother. Here she has to run like a retarded newborn baby giraffe to try and convince the audience that she young enough to be playing a character she is far too old for. Therefore Maggie Grace is a Scabadoo.
by Scabadoos and don'ts October 05, 2010