Tracy Morgan says his homophobic routine during a Nashville standup performance in June was just a big, big misunderstanding.

Appearing on the Late Show with David Letterman on Monday, Morgan said he couldn't remember exactly what he'd said during the infamous performance. So here's a quick reminder: Morgan told the Nashville audience that if his son were gay and didn't come home and tell him about it like a man, he would stab him.

Morgan later apologized, but told Letterman, I just think it was a misunderstanding. I was up there working. Sometimes when you have networks like maybe Comedy Central ... (it's) premise, setup, punchline, premise, setup, punchline. But I came up under the old regime -- sometimes I have to get to it. And I guess that became a big, big misunderstanding.