An old, but very, very glitchy game.
First, you hit this time-stop switch at the end of the co-operative Cannon Core level, and run away fast enough to permanently freeze time.
Then, you walk down the still stream of water, and walk over the ledge whilst holding right, A and B.
What happens? Well, the impossible, somehow Sonic will actually drown, a scenario that should be utterly impossible in this game as Sonic has no under-water levels he can play in! Weird huh?
Video captured from Dolphin Emulator
![](https://i.ytimg.com/vi/_8HpdNV6xFw/mqdefault.jpg)