It's All Relative

On April 1, 2010, George thought it would be a hilarious prank to go back in time and seduce Neal's great-grandmother. Consequently, George became Neal's great-grandfather. While George found this unintended consequence hilarious, Neal did not find this funny whatsoever. As payback, Neal seduced George's great-great grandmother. Super-humanly virile, Neal became George's great-great grandfather. Upset, George thereafter seduced Neal's great-great-great grandmother (after first accidentally seducing his great-great-great grandfather - could have happened to anyone). This went back and forth so many times that Neal's and George's family trees became so convoluted and confusing it would have made M.C. Escher proud.