Squeeze is a British Rock band that came around in the 1970’s. Most of their material includes lyrics by Chris Difford and music written by Glenn Tilbrook. The duo was hailed as “the heirs to Lennon and McCartney’s throne.” This song was their first single that was released in 1980. Difford wrote this song about his time spent on a holiday trip in England at a camp. The Phrase “pulling muscles” is British slang for sex- mainly used in England.