"Funny How Time Flies (When You're Having Fun)" is the seventh and final single from American R&B singer Janet Jackson's third studio album, Control (1986). While "Funny How Time Flies (When You're Having Fun)" was officially released in the United Kingdom and Australia, it was released solely for airplay in the United States in 1987. The song was written by Jackson and collaborators/producers Jimmy Jam and Terry Lewis. It performed poorly on the UK Singles Chart, only reaching number fifty-nine but peaked at #24 on the Irish Singles Chart. In the U.S., though it never charted, it became a famed quiet storm staple on adult R&B and soul radio stations. No music video was filmed for the single. Jazz musician Stanley Clarke covered the song for his 1988 album If This Bass Could Only Talk. The song was also sampled on The Lost Boyz's "Renee" and on Camp Lo's "Coolie High", both from 1996. In 2014, it was sampled on Tinashe's "How Many Times" from her debut album Aquarius. Two years later, it was sampled on SWV's MCE (Man Crush Everyday).

She included the song as an instrumental interlude on her Rhythm Nation World Tour. Jackson fully performed the song on her 2008 Rock Witchu Tour. Jackson also included the song in her performance at the 2010 Essence Music Festival, held in New Orleans, Louisiana. The song was also used as a interlude for the video introduction on the 2015-2016 Unbreakable World Tour.

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