It’s aParks and Recreationreunion day onThe Ellen DeGeneres Show!BothAdam ScottandKathryn Hahncalled in to the show on Friday to chat about their time on the hit NBC comedy, while their former costar,Rob Lowe, filled in as guest host.During her chat with Lowe, theWandavisionactress — who played therecurring character Jennifer BarkleyonParks and Rec— recalled being nervous at first to film scenes with Lowe’s character, Chris Traeger, as she had a major crush on the actor growing up.“I could not believe that wegot to have an onscreen romance!” said Hahn, 47. “I had to forget everything of my childhood so I could be present, because otherwise I would’ve exploded.““I turned into an animal — I was like, ‘Just do the job.’ If my 13-year-old self had known that this was in my future, I could not have worked,” she joked.Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human-interest stories.Rob Lowe and Kathryn Hahn.Michael Rozman/Warner BrosThe feeling of admiration is mutual for Lowe, 57, who quipped, “How great is it when you get to tell your husband … I tell my wife, ‘I got a tough day at work today. I’m gonna go make out with Kathryn Hahn for, like, eight hours.'““It’s crazy! I couldn’t even compute,” said Hahn, adding in a robot voice, “Iwas like, ‘Just. Doing. My job.'““If I was like, ‘It’s Rob Lowe,’ I couldn’t have even handled it,” she mused.“Why. Is. He. Putting. His. Tongue. Down. My. Throat?” Lowe joked, miming robot arm movements and audio as his guest and audience laughed.Michael Rozman/Warner BrosRELATED VIDEO: Kathryn Hahn on Embracing Her Makeup-Free Self for PEOPLE’s Beautiful Issue: “I Am Who I Am"The Outsidersactor went on to praise Hahn for her turn as Agatha Harkness in the recently wrapped Marvel limited seriesWandavision, for which he told her he believes she should win aPrimetime Emmy Award.“You’ve been a killer [actress] for years, and now you’re having this moment,” Lowe said. “And I’m so happy for you. Have you heard the term ‘Hahnissance’? ‘Cause I think you’re having one.““I coined ‘Hahnissance.’ I put it out into the universe, Rob, that was my doing,” she joked, adding that she has seen her “big old mouth” on theAgatha winking memethat has been making its rounds on the internet.“You are gonna put that mouth to good usage, okay?” said Lowe of Hahn’s participation in the rest of the show, pausing as the audience laughed to jokingly chastise them, “Get your mind out of the gutter, America!”
It’s aParks and Recreationreunion day onThe Ellen DeGeneres Show!
BothAdam ScottandKathryn Hahncalled in to the show on Friday to chat about their time on the hit NBC comedy, while their former costar,Rob Lowe, filled in as guest host.
During her chat with Lowe, theWandavisionactress — who played therecurring character Jennifer BarkleyonParks and Rec— recalled being nervous at first to film scenes with Lowe’s character, Chris Traeger, as she had a major crush on the actor growing up.
“I could not believe that wegot to have an onscreen romance!” said Hahn, 47. “I had to forget everything of my childhood so I could be present, because otherwise I would’ve exploded.”
“I turned into an animal — I was like, ‘Just do the job.’ If my 13-year-old self had known that this was in my future, I could not have worked,” she joked.
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human-interest stories.
Rob Lowe and Kathryn Hahn.Michael Rozman/Warner Bros

The feeling of admiration is mutual for Lowe, 57, who quipped, “How great is it when you get to tell your husband … I tell my wife, ‘I got a tough day at work today. I’m gonna go make out with Kathryn Hahn for, like, eight hours.'”
“It’s crazy! I couldn’t even compute,” said Hahn, adding in a robot voice, “Iwas like, ‘Just. Doing. My job.'”
“If I was like, ‘It’s Rob Lowe,’ I couldn’t have even handled it,” she mused.
“Why. Is. He. Putting. His. Tongue. Down. My. Throat?” Lowe joked, miming robot arm movements and audio as his guest and audience laughed.
Michael Rozman/Warner Bros

RELATED VIDEO: Kathryn Hahn on Embracing Her Makeup-Free Self for PEOPLE’s Beautiful Issue: “I Am Who I Am”
The Outsidersactor went on to praise Hahn for her turn as Agatha Harkness in the recently wrapped Marvel limited seriesWandavision, for which he told her he believes she should win aPrimetime Emmy Award.
“You’ve been a killer [actress] for years, and now you’re having this moment,” Lowe said. “And I’m so happy for you. Have you heard the term ‘Hahnissance’? ‘Cause I think you’re having one.”
“I coined ‘Hahnissance.’ I put it out into the universe, Rob, that was my doing,” she joked, adding that she has seen her “big old mouth” on theAgatha winking memethat has been making its rounds on the internet.
“You are gonna put that mouth to good usage, okay?” said Lowe of Hahn’s participation in the rest of the show, pausing as the audience laughed to jokingly chastise them, “Get your mind out of the gutter, America!”
source: people.com