I have to Received an e-mail from Google, warning me about invalid ad's clicks on my site. I certainly don't click on any of my own ads, and don't encourage others to click them either, so not sure where they're coming from to be honest. "It has come to our attention that invalid clicks have been generated on the Google ads on your site. In the future, we may adjust your payment for any days during which invalid clicks occurred in order to properly credit advertisers for any invalid activity."
make some mail to google team... tell google, you don't click your own ads.. and you can ask the IP that make you got warning... after get the IP.. banned that IP from your site.. (so if that IP want to do like that again.. they can't do it...)
Google is pretty smart when it comes to tracking their money, I wouldn't try to fudge the numbers if I we're you. If your honestly not sure then ask them for clarification.
Quickly ( temporarly ) Remove all The adsense Codes From Your site Because SomeBody Must be spamming on you . So Protect yourself first Because if He registered more invalid clicks your account will be disabled .
I can set up a script for you that will show alternative ads after an IP has clicked on the AdSense adds. PM me if you are interested.