{v.} To come or bring to a special or unexpected ending; climax. * /John batted three runs and topped off the game with a home run./ * /Mary hadn't finished her homework, she was late to school, and to top it all off she missed a surprise test./ * /George had steak for dinner and topped it off with a fudge sundae./
TOP OFF
Meaning of TOP OFF in English
Slang English vocab. Английский сленговый словарь. 2012