Identical twins - one fat, one skinny
I find this fascinating for some reason. I mean identical in every way, but separated by a huge amount of weight. Obviously one works out, takes care of themselves and other doesn't give a shit...unless odd medical condition....right? I would think even in that scenario gap wouldn't be that large though. We are talking about a ~60% increase from one to the other.
Just had a run in with one and almost made a fool of myself ( not realizing "identical") until someone gave me the scoop. They just looked like siblings. Would have never guessed identical.