That thing the Youtuber stevecash83 always says at the end of a video description. We don't know what it means, and we'll never know as stevecash83 is dead.
stevecash83: So Sylvester did this thing and yadda yadda yadda. Flaggle Claggle.
fans: what the fuck does flaggle claggle mean, you've been saying it since 2010, we should know now.
stevecash83: ...
Used when something/someone is beyond cuddly and you need to make up a word to describe it. Should only be used while stuttering in an Australian accent while holding a blanket.