Made popular by the Cartoon Network series, "Adventure Time." Meaning, "Oh my God." Used so children can watch the show and make for some fun puns.
Princess Bubblegum: *Looking possessed and catching the entire room on fire*
Jake: *Running out of room* "Oh my Gob! Oh my Gob! Oh my Gob!"
Jake: *Running out of room* "Oh my Gob! Oh my Gob! Oh my Gob!"
by Lady Shalott February 16, 2012