Debra Messing Revealed Her Favorite "Will & Grace" Moment With Sean Hayes And It's Hilarious AF

Spoiler: they *truly* are best friends.

Taylor Miller / Zoe Burnett / BuzzFeed

It's been 12 brutally long years since everyone's favorite hysterical on-screen family in Will & Grace left our television screens. And somehow, we all got really lucky because Grace, Jack, Will, and Karen are all back together again with a brand new sure-to-make-us-fall-on-the-floor-laughing season.

In celebration of the show's return, we sat down with Debra Messing and Sean Hayes to put their decades-long friendship to the test. Unsurprisingly, it turns out they know each other really damn well. Like, so well that we might just have to crown them the BuzzFeed BFF Test All-Time Champions. Here's what went down.

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We put the duo to the test by trying to see if Sean could guess Debra's favorite memory of the two of them on set. So far, so good.

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Sean wrote, "Episode where I imitate 'Grace's mom'." Debra wrote, "When he imitated Debbie Reynolds in a scene and I farted loud."

Sean Hayes: YAAS! I didn't want to say that [points to Debra's notepad], but that's what I wrote!

Debra Messing: We ARE best friends! Oh my god, this is so great! When he imitated Debbie Reynolds in a scene and I farted, out loud. I said it out loud!

SH: Oh, you did?

DM: I did! I was like, "I just farted."

SH: To the audience. She was so proud of that.

Then it was Debra's turn to guess Sean's favorite scene in the entire show — and they nailed it once again.

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Sean wrote, "Coffee episode." Debra wrote, "His monologue high on caffeine."

DM: Coffee! Oh my god!

SH: Ahh!

DM: Oh my god. It's just this most brilliant scene where he comes in holding a cup of coffee and he does not stop talking.

SH: Yes, and they were so kind because they knew how fucking hard I was concentrating because I didn't stop talking for like three pages. So all they saw in my face was me just saying words. But I liked it because it was a big challenge.

DM: It was fantastic.

Next up, Sean had to guess Debra's on-set ritual. Which was, naturally, spot on.

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Sean wrote, "Group prayer." Debra wrote, "Hold hands in a circle. Say a mantra three times."

SH: I think I wrote what she wrote, just more efficiently. Well, no, it could be totally different.

[Flips notepad]

DM: YES!

SH: Yes!

DM: Oh my god. I said hold hands in a circle and say a mantra three times.

SH: Right, which is what Debra started from the pilot.

DM: From the pilot. For eight years, every single show.

SH: Yeah, every single show. And it's good 'cause it bonds us.

And finally, Debra had to guess Sean's all-time favorite guest star. And of course, they got it right!

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Sean wrote, "Matthew Damon." Debra wrote, "Matt Damon."

SH: Because Matt and I used to play softball—

DM: Do you realize how many episodes we had and how many people came on our show in eight years?!

SH: Yes, and we loved all of them!

DM: Oh my god I can't believe we got it!

SH: But the only thing is, Matt and I used to play softball right, like on this little team in Santa Monica and I just asked him one day I'm like, "Hey, do you wanna do the show?" He's like, "Okay." And that was it! And so we did the show. I only didn't think you were gonna say that because he was more your storyline than [mine], well, I guess he was both.

DM: No, he was the choir!

SH: Yeah, he was both. But he dated you.

DM: He did. I tried to seduce him.

Therefore I'd like to formally crown Debra and Sean the official BuzzFeed BFF Test Champions 🏆.

Taylor Miller / BuzzFeed

CONGRATS!

Be sure to catch Debra Messing and Sean Hayes in Will & Grace when the series returns September 28 at 9 p.m. ET on NBC!

Taylor Miller / BuzzFeed