How to take a Camera strap off?

I just got a Nikon D40x for Christmas and it came with a colorful cushion on the strap but I don't like it very much. How can I take the camera strap off so that I can slide the cushion off?

I'm sorry… I keep trying to take this question seriously, but I just can't.

I can't see how you could possibly be able to use a computer, type good text with good spelling, use the internet etc, and yet NOT be able to undo a buckle on a strap.