Pumped Up Kicks was released in 2010 as the debut single by American indie pop band Foster the People and became a worldwide hit the following year. Written by frontman Mark Foster, the track mixed a sunny, whistled melody with much darker lyrics told from a troubled narrator's perspective. That contrast helped it spread on radio, early streaming and social video, where short lyrical fragments were reused out of context. The opening line remains one of its most quoted parts and continues to circulate in edits and memes.