The 'You Know the Rules and So Do I' meme is derived from the lyrics of Rick Astley's 1987 hit single 'Never Gonna Give You Up.' While Rickrolling has been a staple of internet culture since the mid-2000s, this specific image macro became a standalone sensation. It is primarily used as a reaction to situations where an outcome is inevitable or when someone is caught in a predictable trap. Whether it's following unwritten social rules or falling for a classic internet prank, Rick Astley's knowing look serves as the perfect punchline for those who are 'in on the joke' and aware of the consequences.