The line comes from Metal Gear Solid 2: Sons of Liberty, released in 2001 for PlayStation 2 and developed by Konami under Hideo Kojima. Solid Snake, voiced in English by David Hayter, is the series' legendary soldier, and his earnest delivery made even simple dialogue memorable. As Metal Gear clips spread through forums, YouTube edits and soundboards, short Snake lines joined other game staples like enemy spotted and bomb has been planted as instant reactions. Its sincerity still makes it useful when a plain text reply feels too casual.