Who Knew - Music Video

Music Video

The single's video was directed by Dragon, a team comprising Sam Bayer, Robert Hales and Brian Lazzaro. It was filmed in the weekend beginning April 15, 2006 in Los Angeles, United States, and it was released to the internet and to UK music channels in early May 2006. The video reached number one on MTV Germany's top ten and on TRL Italy. "Who Knew" was voted number one on TRL Germany twenty times, allowing Pink to earn the "Golden Tape". In the U.S. Total Request Live broadcast a "First Look" of the video on May 22, and it debuted on the show's top ten countdown the following day; it spent eight non-consecutive days on the countdown (until June 9), peaking at number seven.

It features a young couple visiting a fairground and going on the rides, and at one point the boy puts a necklace on the girl. The video flashes back to the boy secretly injecting himself with drugs on a previous night while the girl is sleeping. At the carnival, when the girl is playing a game, the boy walks away. The girl realizes he's gone and follows him, but when she tries to get him to stay with her he gets violent. He goes to the back of the fairground to inject himself with drugs and breaks into a sweat. His girlfriend wanders around looking for him, and finds him unconscious; he has overdosed. She gives him a kiss, gives back the necklace and phones for an ambulance; after it has arrived, she walks away crying. The video is inter-cut with shots of Pink singing the song at the entrance to the fairground.

In Pink's 2008 album Funhouse, she compares life to a carnival, because carnivals are supposed to be enjoyable, but in actuality, they're not. The setting for the music video with the fairgrounds provides a false sense of security for the girl in the music video.