How do I do that?

[killbull]

http://www.youtube.com/watch?v=8u5xzQBE2Lk

look at minute 0:52 and 3:44, how do u do that with the bananas?

 

[Kasper!]

with a banana in hand, roll followed by the cstick in any direction (the direction you want to throw the banana in).

 

[Vlade]

For questions like these you should go and ask in the Q&A thread. It's stickied so it shouldn't be hard to find.