slang One whose ideal sexual partner has a large penis. Are you big enough for her? I hear she's a size queen.

To provide evidence in court implicating other parties involved in the crime for which one has been charged, in order to receive a reduced sentence or to avoid prosecution altogether. Primarily heard in UK. We're leaning on him pretty hard, so we think he'll turn king's evidence and finger his accomplices.

To arrogantly assert superiority over one. Said almost exclusively of a woman. OK, yes, you beat me—now quit queening it over me. After her appearance in the film, she started queening it over everyone in class.