I've seen some people out in Flourite roleplaying as inanimate objects such as a Pencil, a Rock, a blade of Grass, etc. It was quite entertaining to watch them roleplay for a while. I bet they were major bored.
If that's not technically weird, then there's also the time I was babysitting the nubs in Bonfire when I saw a Man-eating Pear trying to eat the other players around it.
I also once saw a Wolf, Lion, and Dragon statue sitting idly by the entrance of South Pole. They didn't say a word, nor moved, just sat there silently while the individuals around them tried to get them to talk and all whatnot.