Remember back in the mid-90s when computer games like Myst came out without any obvious storyline or direction*? Well I just found a totally fun minigame called "Feed the Head" and it is exactly what it sounds like - a game where you feed a head!
And pull off its nose...among other things.
Anyway, it's super fun and doesn't take terribly long to play. Check it out!
[Edit: If you're wondering, if you haven't fed the fish, you're not done yet]
* I know Glacierman does. =)