Place it immediately after the questionable claim in your timeline, then follow with the buzzer for a hard fail or the bruh sound effect for a quieter disbelief beat before moving on.
About this sound
This clip is the sung hook 'Why you always lying' stretched out in an exaggerated, teasing vocal over a playful R&B parody backing. It feels mocking and funny rather than furious, turning a caught lie into a shared joke. It comes from Nicholas Fraser's 2015 viral comedy song.