Photobombers -- the (often intoxicated) work of a dude who sneaks his way stealthily into your photographs, completely marring what would have been another awesome picture of you and your friends holding up your beers and smiling.

Although often photographed, his kind remains a mystery. Who is this random man? Where did he come from, and what are his motivations? One golden moment of genius and then, in a flash, he's gone.

Wonder at his antics in this gallery of great photobomber moments we gathered from around the web including College Humor and Flickzzz.com.

Photobombers: Here Comes Trouble

    Soon after his death, George Carlin's ghost began appearing in photos worldwide, spreading his message of love and peace, motherf*&$ers

    flickr.com

    ...and sometimes George Carlin's ghost was getting photobombed himself.

    Bonnie Biess, Asylum.com

    something about drunk guys with silk ties stealing your girlfriend..

    flickr.com

    You never forget your first taste of Pabst.

    listoftheday.com

    ..your second will send you on a murderous rampage.

    Bonnie Biess, Asylum.com

    Carlton squealed with delight upon realizing that Sheila was about to honor his drunken request to "show us your t*ts!"

    Facebook.com

    photobombers.com

    Here Comes Trouble

    Facebook.com

    The superfluous 'Wet Willie Attack' bomb.

    flickr.com

    You never know where Hall & Oates will show up next.

    martinsquest.com