I don't know about you, but I know I don't play some chords "right." I have fingerings that work for me for various reasons, which confuse people who are trying to watch what I'm doing and follow. Probably the weirdest one is this:
I like that one because it's nice to be able to add the 7th to an open Em already in progress, but you don't usually see chords played just with the index and pinkie.
This one confuses a lot of people, because at a glance it looks like I'm playing an open Am7:
Whereas if I am actually playing an open Am7 it's usually like this:
There are others. What are yours?