What Is Love was released in 1993 by Trinidadian German singer Haddaway and became a major Eurodance hit across Europe and the United States. Its chorus turned into a pop culture catchphrase, helped by Saturday Night Live's Roxbury Guys sketches in the mid 1990s, where two club obsessed characters bobbed their heads in unison to the track. The 1998 film A Night at the Roxbury extended the joke, and later meme edits revived the hook for romantic fails, club parodies, and nostalgic 90s references online.