RPGaDay 2019
There isn’t an instance of a critical hit/fumble that really stands out from my gaming past.
Though I know it’s happened, in both cases.
I once rolled a natural 20 before a game session, as a test roll for a new d20. I don’t believe it ever rolled a 20 after that.
And I know I’ve rolled a natural 1 as recently as our last couple of RPG sessions. Maybe a natural 20 was in the mix as well.