LEWISVILLE, Texas — Here are a few theories as to the origin of “Mean Joe” Greene’s nickname. There’s the story of a middle-school nemesis named “Sleepy,” who once stole the five dollars Greene’s mother had left on the television set to pay the insurance fees her son needed to play on the school’s football team. “I popped him, knocked him down,” Greene said. “That ended it. He didn’t bother me anymore, and no one else did it. I ended up playing catch-up. I guess I caught him. So I ended up having the reputation as a bully for a while.” There’s the reputation that girls from his hometown of Temple, Texas, brought along to North Texas in 1966, when Greene joined the football team as an imposing defensive lineman. TWO WEEKS IN TEXAS: The series so far “They knew me,” Greene said, “and their explanation of Joe was, ‘Oh, he’s a real nice guy, but he’s mean.’ ” read more: http://ftw.usatoday.com/2015/08/mean-green-mean-joe-green-nickname-origins