SHABOOSE

To take something from someone when they have asked you if you want some before going to get it--and you declined. The best description is when you ask your friend I am going to get a burger and fries, you want something? they decline, but when you return, they take a substantial portion (more than a couple of fries). Shabooser, shaboosee, shaboosist, shaboosing, shaboosable. Example: If I had known you were going to shaboose my potato salad, I would have got more for you.