nobackout Share definition Flag When a person sets a challenge, they say "nobackout" to make sure the other person does not back out of the challenge. Hey bro, I dare you to jump over that pole , nobackout Damn , now i cant back out of this. nobackout by Jenh Doa June 24, 2023 0 0 Get merch Get the nobackout mug. Buy Now — $32.95 See more merch