What are some of your truly weird games?

Games that you've either made or discovered, that just have the most bizarre premises, that clearly aren't made for a particular audience. I want to play these games and finish genuinely wondering if the creators are alright. Stuff that I wouldn't want to play alone at midnight with the lights off. Or in the middle of the day with the lights on, either.

My list so far includes the following recommendations:

Juice Galaxy