One strap Share definition Flag When someone at school has their bag on one shoulder, you pull it off their back and shout one strap. BOB: *wears his backpack on one shoulder* JEFF: *knocks bag off BOB's shoulder* ONE STRAP! One strap by Https.lilith.com May 23, 2021 0 0 Get merch Get the One strap mug. Buy Now — $32.95 See more merch