When you're so depressed you wake up and take a shot while looking in your bathroom mirror in the morning. Also works if you're a celebrity rock star.
After falling from fame, rock star Jimmy Flame starts every morning with a mirror shot of Tequila and a good cry.
by thejokester001 June 7, 2013
A photo taken of oneself in his or her bathroom mirror usually with a cellular telephone camera. Mirror shots are taken by either toolbags or sluts that usually post them to social sites in order to gain attention either through compliments (eg "bra, you're so ripped!") or criticisms (eg bra, you're so gay). The duchiest of mirror shots are those that are taken without a shirt on, usually accompanied by sunglasses and/or by a face known as a "grill". Females taking mirror shots usually expose large amounts of cleavage and often push out their rear ends to appear like they have more "junk in the trunk" then in actuality. People who post these mirror shots are likely candidates for mirror masterbation although that is not always the case.
Bra did you see John's mirror shot he just posted? He's so gay.
by imjustakid588 July 23, 2011
A cliche of human (or rather, proto-simian being) that enjoys taking his shirt off, taking a picture of himself in the mirror with a cellphone, photoshopping abs on, and uploading the final, bestial product to some form of social networking site (usually Myspace). Average IQ: Lesser than or equal to 90. If a specimen is spotted, the only known remedy is euthanization.
Mirror Shot Core douchebag: OMG LOOK HOW FUCKING DEEP, EDGY, AND RIPPED I AM. *takes off shirt and flexes*

Good Samaritan: ...
*shoots between eyes*
by TeeRyeForce February 21, 2012