It all started in the '70s when Ronald signed up for the Army and went through months of training only to decide at the last minute that he didn't want to be shipped off to Korea to serve as a helicopter mechanic. Ronald said, 'What the heck, I'll go for you' -- he'd fixed a few cars in his neighborhood, so how hard could a helicopter be?
Since no one caught them (Donald became a crew chief in Korea), the twins kept pulling the ol' switcheroo every time Ronald got into trouble. Donald had some run-ins with the law himself and insisted that his bro was too soft and delicate to spend time in prison ... despite the fact that Ronald was a violent criminal who repeatedly threatened to murder his wife. When a judge told him to cut that shit out and sentenced Ronald to six months in jail Donald once again stepped up and turned himself in, pretending to be his brother. Apparently, they didn't bother to check his fingerprints because they didn't know he had a twin, nevermind one stupid enough to take his place.
Unfortunately for Donald, and his prison-loving brother, Ronald got himself arrested five days later for attempted murder, battery, and robbery and was sentenced to 14 years inside in addition to the six months he tried to skip. Investigators worked on the thesis that the twins had planned everything to give Ronald an airtight alibi to murder his wife but eventually realized that it was a case of extreme brotherly love. Meanwhile, Donald still maintains that he would love to serve the jail time for his brother if he could.