Place it as the final beat after the fail is shown, once the audience already knows who lost. Open the sequence with the Bruh Sound Effect for disbelief, then close with the Emotional Damage Meme Sound to stretch the roast into a longer reaction.
About this sound
This short Korean voice clip says L을 가져가, meaning take the L, in a quick, confident delivery that puts a hard emphasis on the L. It feels teasing and funny, like rubbing in a loss after a mistake instead of starting a real argument. It spread through the L을가져가 challenge, where creators used it to mock losses in games, sports and everyday fails.