When testing websites it may be beneficial to spoof the referer URL. I have used these methods in the past to locate bugs in code or files that have been infected with forms of search engine click jacking. The two easiest methods that I have found are using the Google Chrome extension called Spoofy or just using curl from the Linux CLI. Typically using curl is the easiest but if you are not familiar with curl then Spoofy also provides similar results. Below I describe both methods in detail.