XYZ

XYZ Is A filler word used a s a A Way of referring to something unspecified whilst it may be a bit uncommon many

would agree that this works just fine and won't question why are you using it in a sentence.

XYZ Is used in sentences were you would like to be unspecific about the topic such as

"Hey Mike yester day I Saw Sally At The Walley"

"Hey Mike Yester day I Saw XYZ at XYZ"

Hey Jeff did You see XYZ today?

Today I went to XYZ location.

Hey Mike Yester day I Saw XYZ at XYZ

Did you see The news Today there Was a Accident in XYZ