Oh jeez my first experience with VRChat didn't go so well. 

I hopped on, spawned in some little house thing. Used the mirror there to pick an avatar (Some bright pink dog thing).
Searched for a world I liked the look of and made a private instance just for myself.
The world was made to look like the train from Spirit Tracks, moving along a track. It was very cool. 
I fell off the train and my graphics went crazy, everything was flickering and moving too fast, I couldn't move and opening the menu on my hand didn't help, I couldn't select the button to go home or respawn nothing on the menu was working it was like the menu was flickering extremely quickly and not actually working. 

Had to take the headset off and kill VRchat from my PC. 
I'll try again tomorrow maybe.