Debra Messing, Megan Mullally Joke Around at 'Will & Grace' First Taping: 'Sean Hayes Got Fired!'

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The gang’s back! The cast of Will & Grace had their first night of filming on Wednesday night and took to social media to celebrate. Debra Messing, Megan Mullally, Sean Hayes, and Eric McCormack got up to their usual antics on the set of the new reboot.

WATCH: EXCLUSIVE: 'Will & Grace' Stars Dish on Revival Series & Reveal Karen's First Line! “It’s opening night!” Messing declared in one Instagram video. “Wooo on Broadway!” Mullally joked. “Oh wait…” “We’re about to shoot it,” Messing added, panning the camera around the room.

Mullally also had some fun with her on-screen and real life bestie, Hayes, in her own Instagram video. “Tonight is our first taping, and Sean Hayes got fired at the last minute,” Mullally quipped. “What?!” Hayes jokingly replied. The cast recently opened up to ET’s Leanne Aguilera about returning to the hit show years later.

WATCH: 'Will & Grace' Cast Celebrate First Day on Set With Ribbon Cutting, Set Pics and Make-Outs -- Watch! "The fact that we're coming back at all is a miracle to me. That's never happened before," Mullally told ET. "We had no reason to ever think that the show would come back and to have them now have that faith in us based on the fan response to do a second season, is just really thrilling." For more from the exclusive interviews, watch the clip below!