Throwing up gang signs? Pfft, that's for amateurs! Real physics nerds flash the right-hand rule, where your fingers magically represent three perpendicular vectors in 3D space! Your thumb points to B (magnetic field), index finger to F (force), and middle finger to v (velocity). It's how we secretly identify fellow physics enthusiasts at parties while calculating electromagnetic interactions. Next time someone asks what you're doing with your hand, just smirk and say "calculating cross products, obviously." Science street cred: ACHIEVED.