The mathematical flex nobody asked for but everyone needed. In physics, a "jerk" isn't just someone who cuts you off in traffic—it's the third derivative of position with respect to time (d³x/dt³). While you're out there being a regular human jerk, this gentleman is the mathematical jerk, measuring the rate of change of acceleration. The ultimate "we are not the same" flex for anyone who's survived differential equations. Next time someone calls you a jerk, just ask which derivative they're referring to.