"The eyes of a serial killer": Why everyone is talking about Spencer Pratt and Lisa Kudrow.

TikTok is a funny thing. It's fast become the world's most popular social media app.

Even Spencer Pratt, the reality star villain from the 2000s cult reality show, The Hills, has an account.

This week, one of his videos went viral - because it involved Pratt talking about none other than Lisa Kudrow.

Watch: The Hills opening sequence. Post continues after video. 

Here's everything we know.

What happened between Spencer Pratt and Lisa Kudrow?

Pratt went viral on TikTok when he was asked by fans to name the rudest celebrity he'd ever met - and he named Lisa Kudrow. 

"Oh, that’s easy – Phoebe from Friends," he said in the clip. "Hands down one of the worst humans I’ve ever come in contact with. By far."

After being begged by fans to tell the story behind his chance encounter, Pratt explained that in 2009, he and his then-girlfriend, Heidi Montag, attended a party together.

Spencer Pratt and Heidi Montag starred on The Hills. Image: Getty.

"The party was held in the backyard of then-chairman of NBCUniversal’s Malibu mansion. It was clear when we got there, no one wanted us there," he said.

"It was almost like we were filming for Punk’d and a camera was going to pop up, but Heidi and I didn’t care as there was delicious food and an open bar." 

He added that the situation took a turn after Kudrow approached them.

"As we were sitting there consuming a little caviar, Phoebe approaches, which was a little shocking as no one had spoken to us at all at the party," he said.

Pratt then alleged that Kudrow told Montag that she “needs to get away from me as fast as possible because I’m going to murder her” and that he had “the eyes of a serial killer.” 

According to Pratt, Montag waited to see if it was a joke, before realising it clearly wasn’t.

"Maybe this is a bit, a skit – maybe this is a hidden camera party and why we were invited to this elite party – but no laughs," he recalled. "She just walks away, and that right there was the rudest moment I’ve ever encountered with a human being."

What has Bethenny Frankel said about meeting Lisa Kudrow? 

Bethenny Frankel, who starred in eight seasons of The Real Housewives of New York City, also weighed in, commenting on Pratt's video that she'd had a "crazy" experience with Kudrow. 

When probed, she revealed that the Friends star had appeared on her talk show and made it obvious she didn't want to be there. 

"When [Lisa] was on my talk show, she stood out as the person who wanted to be there least of anybody the entire run," Frankel said.

Bethenny Frankel and Lisa Kudrow. Image: TikTok @bethennyfrankel.

"It was like I walked up to her at the supermarket, and she'd be like, 'What?! You're coming up to me in the frozen food section."

She added: "I was asking her basic questions, and you could tell she didn't wanna be there, which does make two of us."

Frankel said that while she's sure Kudrow is a lovely person, she had to share the memorable experience.

"She didn't wanna be interviewed, which gets in the way of an interview," she said.

Spencer Pratt on TikTok. 

With the rise of TikTok's popularity, we've seen many celebrities make their debut on the app - from Kylie Jenner to Lizzo and now, Pratt, who is answering any question fans want to know the answers to.

While he earned a reputation for being the most hated villain on The Hills, it seems many viewers of the show have come around since it ended in 2010. 

With 540,000 followers, his content is reminiscent of his reality show days... except this time, everyone is on his side.

Pratt has addressed much of the drama from the show, starting with the producers who he claimed manipulated him and Montag to act a certain way.

"I don't think we understood the level of manipulation and how real everyone thought the show was so it's nobody's fault," he explained. 

"They always said they were gonna redeem us every season, and they never did. Maybe there's going to be a reboot of the reboot and we'll finally get our redemption."

Listen to The Spill, Mamamia's daily entertainment podcast. Post continues after audio. 

In another clip, he responded to a person claiming he would do it all over again for money. 

He responded: "I would cash the paychecks again and I would go along with it all over again but that doesn't mean I'm not gonna go on TikTok and talk through situations and realities."

Pratt has since gone on to marry his Hills co-star, Montag. Together they share one child and announced in June they are expecting another.

Pratt's made it clear he isn't going anywhere. 

"Talking about situations feels so good and explaining things that happened in my life and my angel wife's life is very healing," he explained.

Feature Image: Getty.

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