在闹着玩儿

be on a diet be on a drunk be on a committee for a lark have a lark with take a lark with be up with the lark be not a patch on be on a parity with be in on a racket be on a good wicket be on a razor's edge be on a diet have a lark be on a false scent be in on a racket be on a good wicket be on a razor's edge be on a parity with be on a winning streak be on a losing streak be on a sticky wicket be not a patch on