Losing 1 kilogram fast.

I've gained 1 kilogram (about 2.2 pounds? I don't know) from having the munchies and I can't stand it. I'm usually quite thin. It messes my head, I just want it gone. Please help, how do I shed that 1 kilogram? I know, I'm not thinking clearly, but still.

Also- Not from the US\UK, so if you recommend products, I'm sure we have it in here...
Thanks in advance.