We've found 6 phrases for mug (0.209 seconds):

cat that ate the canary »    A person who appears self-satisfied or smug, especially while concealing something mischievous, prohibited, or private.

charity mugger »    A person employed by a charity, or by an intermediary fundraising agency employed by the charity, who stands in the street and invites passersby to set up standing orders or direct debits to make regular donations to the charity.

high horse »    An appearance or sense of smug superiority.

mug up »    To study intensely.

mug's game »    A foolish, profitless, or hopeless undertaking.

shit-eating grin »    A broad smile indicating self-awareness that may suggest self-satisfaction, smugness, discomfort, or embarrassment.

BTW, Why won't you become an editor?