Lyrically, it details Shakira's involvement in a man's extramarital affair, which leads to her feeling guilty and hurt about it.

An accompanying music video for "Did It Again" was directed by Sophie Muller, and features Shakira fighting a man in a bedroom.

[5][10][11] The lyrics of the song are confessional in nature and express Shakira's growing guilt over the fact that she is in a sexual affair with a married man, and her inability to end it, hence the title "Did It Again".

[5][15] A remix of the English version of the song, featuring additional vocals from Kid Cudi, was later released on 11 December 2009.

[18] Evan Sawdey from PopMatters commended the song's production and labelled Shakira' songwriting skills as her "strongest suit".

[11] Anthony Balderrama from Consequence of Sound, singled out "Did It Again" as one of the strongest tracks on the album, along with "She Wolf" and "Why Wait", and also as a good choice for creating a Spanish version.

[24] The Spanish version also received a nomination for "Canción del Año" ("Song of the Year") in the Pop Category at the Premio Lo Nuestro 2011 awards ceremony.

[41] Shakira cited the paintings of British painter Lawrence Alma-Tadema, which detailed scenes of women in Turkish bathrooms, as an inspiration behind the video.

[43] A video for the remix version of the song, featuring American rapper Kid Cudi, debuted later in December 2009.

[17] The video starts with Shakira sitting in a steam filled bath house surrounded by other women facing her, all clad in white.

[45] Shakira appears in a bedroom wearing black lingerie and begins fighting her partner (played by dancer Daniel "Cloud" Campos[41]) in a martial arts-inspired dance routine and ultimately manages to defeat him.

Tanner Stransky from Entertainment Weekly reviewed the video positively, and said it was a "fun feat to watch her [Shakira] pull off".

[42] Story Gilmore from Neon Limelight called the fight between Shakira and her partner an "angry yet passion filled tussle" and the video a "smoking hot winner".

[17] Olivia Smith from the Daily News described the dance choreography as "highly athletic", but criticized the design of the hotel room where the video was filmed.

[45] In both the performances, Shakira was backed by female Korean drummers, who were also present in the music video of the song.