It was included as the lead single of Bedingfield's second North American album, Pocketful of Sunshine, and features vocals from Jamaican-American reggae singer Sean Kingston.

The song was written by Bedingfield, Kingston, Louis Biancaniello, Rico Love, Ryan Tedder, Sam Watters, and Wayne Wilkins, while production was handled by Biancaniello, Love, Tedder, and Watters under their production group, the Runawayz.

[3] The official remix features vocals from rapper Lil Wayne and a slightly different beat, produced by Jim Jonsin.

[6] In 2007, Bedingfield began writing and recording new material for her second North American album Pocketful of Sunshine.

[3] The song was written by Bedingfield, Kingston, Wayne Wilkins, Louis Biancaniello, Rico Love, Ryan Tedder from the band OneRepublic, and Sam Watters—an original member of American R&B group Color Me Badd.

Chuck Taylor in a review for Billboard described the song as a "jaunty, youthful track that clears home base and should propel Nat forward",[8] while Chris Boeckmann of Stylus Magazine called it "useless" and a "dud".

Slezak was unimpressed with the pairing of Bedingfield and Kingston, writing "it's as if two people who I'm not entirely convinced can sing got together and recorded a heavily focus-grouped song, then ran their vocals through a giant computer".

[11] In another review of the song, Lamb wrote that Kingston's vocals "serve no purpose other than providing an extra element for the single's marketing campaign".

[5] The song has sold over one million digital downloads and has been certified platinum by the Recording Industry Association of America.