Cultural appropriation.
Friends was a stupid show, and hardly worthy of any cultural note.
Even the theme song was written by morons. The first verse declares, "So no one told you life was gonna be this way..." and then contradicts itself in the second verse stating, "Your mother warned you there'd be days like these..."
Either two different people wrote the respective verses and didn't discuss, or the person who wrote the first verse got so stoned that by the second verse he forgot what he wrote.