Coming in ‘hot’ as her second single from One of the Boys “Hot N Cold” is a song about a boy who is constantly changing his mind and going through mood swings – and how all of this annoys Perry and affects her relationship with him. In the years since its release, “Hot n Cold” has become a Perry standard, and is one of her more recognizable songs to date.

Unlike the guy in the song, the song’s reception was anything but cold; it was the second-most successful single off of One of the Boys, peaked at #3 on the Billboard Hot 100, and won Perry a Grammy nomination for Best Female Pop Vocal Performance.

Since its release, the song has been featured in a commercial, film, and even video game.