I know Google wouldn't allow this, but theoretically, they wouldn't be able to know... If someone clicks my ad, and I click theirs two days later, it shouldn't really do much damage right? Has anyone done this?
It's called click-fraud. Years ago scum bag marketers used to have software that would just click ads. Google figured it out by the IP address that 1 "person" was clicking the same ad constantly. And yes there are some "marketers" that still use software that will just click ads, use different IP addresses and make it look real. I remember some guys making tens of thousands of dollars a week (sometimes more) from clicks. Long story short, a click here a click there, nobody cares. Get greedy and get banned.
Only low life bottom dwelling scumbags do that. How about you head over to the Adwords forum and tell them there what you are planing to do by ripping of their hard earned money. Its not Google that you re scamming, it them. See how they treat you.
This is wrong way Adsense need some days to update data information until finding your click IPs after that comes message to your dashboard but take you permit to continue then if you repeat this in next time also comes violation message to your dashboard as the second warning and every time discount amount in the last pay earning the if you repeat same work in third time AdSense directly close your account