Cousin Throckmorton, aka Throcky, refers to a fictional character who appeared in a physics textbook word problem. In the problem, "Cousin Throckmorton" is a skateboarder, and the student is tasked with discovering the speed at which he descends a ramp and the force acting on him at the bottom of his descent. Once a Twitter user posted a screenshot of the question, it spread on social media, with people making jokes about Cousin Throckmorton, the skateboarder.