The ultimate fluid dynamics dad joke just dropped! When Rey introduces herself, the follow-up question "Rey who?" leads to the punchline "Reynolds number" - that brilliant dimensionless quantity that predicts flow patterns in different fluid flow situations. Engineers and physicists everywhere are snorting coffee through their noses right now. The Reynolds number (Re) literally determines whether your flow is laminar (smooth) or turbulent (chaotic), kind of like my dating life. Next time you're watching water swirl down a drain or calculating airflow over an airplane wing, remember: it's not just fluid dynamics, it's a Star Wars pun waiting to happen!