Alyson Hannigan feels so high school about Taylor Swift’s recent American Pie shout-out in one of her songs.

The actress, who starred as Michelle Flaherty in all three American Pie films, told Vulture that she had a full-on “freakout” after hearing Swift name-drop the 1999 comedy in her new track “So High School.” On it, the Grammy winner sings, “I'm watching American Pie with you on a Saturday night / Your friends are around, so be quiet.”

Hannigan recalled staying up late to listen to Swift’s latest album, The Tortured Poets Department, on its release night before going to bed, fully unaware that the singer would drop an additional 15 tracks — including “So High School” — just three hours later.

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"I started listening to it, and when I got to 'So High School,' I was like, 'What?!'" she recalled. “I thought maybe I was still sort of sleeping and imagining it. But when I heard it, I was freaking out. I woke up my entire family, who seemed less enthusiastic than I'd like them to be. Then I called a friend, and she and I had a nice freakout together."

“I was so happy. Basically, I was on the date with Travis and Taylor," Hannigan said, referring to the pop star and her boyfriend, Travis Kelce.

The reference wasn’t Hannigan’s only recent tangential brush with Swift. The How I Met Your Mother alum said she and her Dancing With the Stars partner, Sasha Farber, caught Swift’s attention on social media shortly after the song’s release.

"I did a little story on Instagram and he filmed it and he posted it on his feed," she said. "It was the two of us driving around listening to 'So High School.' He posted it on his feed, and it was liked by Taylor Swift! Like, why wasn't it on my feed?!'"

Reflecting on the legacy of the film series, Hannigan noted that it wasn’t “that big of a leap” for her to imagine that Kelce, who is a tight end for the Kansas City Chiefs, had seen at least one of the movies in his life.

"Well, it's not like I ever sat there and thought, 'Oh, I wonder if Taylor and Travis have watched American Pie,'" she said. “But I do have to say that in the past 25 years, people ask me, 'Oh, what do you get recognized for?' And I always say that it depends where I am. If I were at a football game, it would definitely be American Pie. So it's not that big of a leap to think that Travis had watched it."