I was full sure this was by the Invisible Engine guys but I've searched their Youtube and Vimeo feeds and can't find anything.
Plot in full:
A man is being stalked by a weirdo in a helmet. He goes through a doorway and waits around the corner for his stalker, then grabs and confronts him.
The stalker reveals he is the man's future self, and has come back in time to warn him about something, but basically he's so stoned he can't remember. He decides he must get a degree from Brown University. Then he asks him for some weed, and a loan of 5000 dollars. Then he pulls a gun on his past self. Past self tries to talk sense into him.
Suddenly a very old man appears in front of them. Future self shoots him, and it turns out he is the far, distant future version of both of them. He dies saying "in a way, I think, I've always known!"
Can anyone find this for me?