Spade on 'SNL.' NBC If you read Norm Macdonald's epic Twitter explosion about his crazy week helping make the "Saturday Night Live" 40th-anniversary special happen, you might be wondering: What the hell did David Spade actually do to piss off Eddie Murphy?

We know that Eddie made the Bill Cosby-approved decision not to appear in Macdonald's sketch, but he did return to the show for the first time in decades, something he'd refused to do since 1995.

The last anniversary was the 25th. Eddie did not attend due to a remark by David Spade. David is a very kind man, but his remark was not. — Norm Macdonald (@normmacdonald) February 19, 2015

So Eddie never came back. — Norm Macdonald (@normmacdonald) February 19, 2015

Well, we found the remark. Here it is (at about 2:50):

Murphy actually addressed the joke in an interview with "Rolling Stone" back in 2011.

"Yeah, because they were s----- to me on "Saturday Night Live" a couple of times after I’d left the show. They said some s----- things.

There was that David Spade sketch [when Spade showed a picture of Murphy around the time of Vampire in Brooklyn and said, “Look, children, a falling star”]. I made a stink about it, it became part of the folklore.

What really irritated me about it at the time was that it was a career shot. It was like, “Hey, come on, man, it’s one thing for you guys to do a joke about some movie of mine, but my career? I’m one of you guys. How many people have come off this show whose careers really are f----- up, and you guys are shitting on me?”

And you know every joke has to go through all the producers, and ultimately, you know Lorne or whoever says, [Lorne Michaels voice] “OK, it’s OK to make this career crack …”

I felt s----- about that for years, but now, I don’t have none of that. I wouldn’t go to retrospectives, but I don’t let it linger. I saw David Spade four years ago. Chris Rock was like, “Do you guys still hate each other?” and I was like, “I don’t hate David Spade, I’m cool with him.”

UPDATE: It's nice that Eddie squashed his "SNL" beef, but why get so mad about a career joke, especially since it turns out that you cracked a very similar joke about OG cast member Garret Morris during a "Weekend Update" segment in the 1980s.

Here's the clip: