The Tell Rick and Morty Missed
Rick & Morty’s parallel episodes show myriad alternative versions. There’s Fat Rick, Juggling Rick, et c.
From the point of view of Fat Rick, all alternative Ricks have an easy tell - they are all skinny. And of course the Drama-Morty can instantly spot alternative-universe Morties because they don’t have the same flair for drama.
The Rick and Morty we see suffer from a kind of improper ‘defaultism’. If all the alternatives had pointed ears, they could be known as ‘round-ear’ Rick, or similar.