Metal Detector couch gag

The Metal Detector couch gag is the 1st couch gag of Season 17.

Plot
The Simpson family enters the living room through a metal detector, except for Homer, who sets the detector's alarm off. After four failed attempts, Homer, who is now stripped down to his underwear, is detained by a security guard who is inspecting Homer with a handheld scanning wand while the rest of the family watches.

Character Appearances

 * Homer Simpson
 * Marge Simpson
 * Bart Simpson
 * Lisa Simpson
 * Maggie Simpson
 * Detector Security Guard (couch gag)