ghost growl 

When your stomach growls but you have no correlating sensation of gastro-intestinal activity leading you to believe it was someone else's tummy groaning.

Is that your stomach growling? I don't think so. Must be a ghost growl.

ghost growl by wolfbait51 May 13, 2011

Ghost Rule Growl 

A ghost rule growl refers to the powerful note in the song Ghost Rule by DECO*27. Although the original song doesn’t actually use Hatsune Miku’s growl, people like to make compilations of stolen vocaloid covers of the song calling them “Growl Compilations”.

“Oh god I found one of those TikTok accounts that just posts ghost rule growls”

Ghost Rule Growl by GnomeoStan23 September 7, 2021