Nick Kroll and John Mulaney
Comedians Nick Kroll and John Mulaney are pictured on May 23, 2016, in New York. Getty Images

When John Mulaney approached Fleetwood Mac’s lead singer Stevie Nicks about doing a parody song on his new show “John Mulaney & The Sack Lunch Bunch,” she thoroughly passed on the offer. The reasons why were various, but most notably, she did not find the song funny.

Mulaney appeared on “The Tonight Show Starring Jimmy Fallon” on Monday to promote the new Netflix special and retold the story of how he sent Nicks a parody song that he wanted her to perform on the variety show and how she did not get it.

It took Mulaney quite some time to get a hold of her and when he finally did, it was her manager relaying the information back to him. She explained to him that Nicks was quite busy on tour and wouldn’t have time to appear on “John Mulaney & The Sack Lunch Bunch” to sing a song she hadn’t written. It seemed that both the manager and Nicks herself were quite confused about the offer.

As Mulaney explained, the manager went on to say: “Also Stevie listened to the song and she doesn’t think it’s funny.” While attempting to cut the rejection short, Mulaney told her that’s all she had to say.

But to add insult to injury, the manager continued to explain how strange it was that he was asking her to sing a parody of one of her own songs, stating that Nicks does not like the idea of that.

“I started laughing really hard because this was the longest pass I’d ever heard in about a decade of entertainment,” the “Big Mouth” star told host Jimmy Fallon. Mulaney told the manager to pass a “thank you” on to Nicks and confessed that he wrote her a part in his Netflix special because he wanted to hang out with her.

“Well then, come hang out,” the manager told Mulaney. “We have people in the backyard all the time.”

To date, Nicks has only made a small number of on-screen appearances, all of which included her singing her own original songs. A show like “John Mulaney & The Sack Lunch Bunch,” a special that Mulaney describes as "SONGS. SKETCHES. QUESTIONS ON HUMAN EXISTENCE," is unlike anything she’s done before.

It’s not clear whether Nicks was offended or just confused, but when “John Mulaney & The Sack Lunch Bunch” hits Netflix on Christmas Eve, it will be shy one Stevie Nicks and one Stevie Nicks parody song.