K-pop Group Stray Kids Reveal Their Secret Nicknames For Each Other | Besties On Besties | Seventeen, It's quite obvious that K-Pop Boy Band Stray Kids have a tight bond, but how well do they really know each other?! Watch them take on the Besties on Besties challenge to discover their favorite memory together, hardest music video to film, and MORE! Want more Besties on Besties? Watch here: https://www.youtube.com/watc.