By Hunter Hodies Michael Irvin knows how heated some of his debates can get with ESPN’s Stephen A. Smith on air. Irvin appears on “First Take” with Smith during weekday mornings and has even confirmed that their conversations off air can be the same. “Depending on the conversation, you better believe we’re right up there,” Irvin told Ryan Glasspiegel of the New York Post. “When we’re off-air, he’ll tell me, ‘Sit down. We’re not on TV!’” Irvin told Glasspiegel that it’s been that way dating back to their Fox Sports days. He also has confirmed that despite their heated debates, he’ll always thin…