"Jack" is a song by British record producer Breach. It was released through Dirtybird Records as a single on 12 July 2013, and peaked at number 9 in the UK Singles Chart. The track also features on Now That's What I Call Music! 85.

The music video follows a woman and a man with a mustache who appear to be lip-synching the song. Next appears a man dressed as a caveman with a furry skirt. He carries a box in with a lever that switches their hair to where there shouldn't have hair and vice versa. The caveman then presses the 'Automatic' button which continues the switching back and forth, also allowing him to perform a repetitive dance accompanied by a blonde female. After that the man picks the 'Ginger' option. This is followed by a cut-scene in which a red-haired lady climbs all over an orange (ginger), hairy armchair, with huge scissors and hairspray. Then after this scene the video returns to 'Automatic'. The hair reversal ends when the Asian woman blows and pops a piece of bubble gum. As of June 26, 2017, it has over 11 million views.

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