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There's something different about Jennifer Aniston.

The Horrible Bosses 2 actress stopped by her gal pal Ellen DeGeneres' eponymous talk show Tuesday and played a game called Last Word. "We have 45 seconds on the clock and we take turns saying words and we have to be the last word in before time runs out. You can't repeat something," the comic said.

DeGeneres added that they must use "anything you have to say instead of saying a bad word."

Aniston, wearing a red jacket from DeGeneres' dressing room, started the game with the word "fudge." As the two friends shouted "cheese and crackers," "dagnabbit" and other replacement curse words, the movie star's chest began to swell. By the end of the round, it appeared as if her chest had quadrupled in size. "Um, did you...did you get ahold of my things backstage?" DeGeneres asked. "Your things?" Aniston asked, feigning ignorance. "What things?" the host laughed, adding, "Something's changed about you."

"I don't know what you're talking about," Aniston said, sipping her drink. DeGeneres smiled and told her famous pal, "That's a good look on you. Will you stand up, please? I just want to see how pretty that is."

Aniston obliged and joked, "This is what my version of the [Kim Kardashian], but the forward one."

In the same episode, Aniston also addressed the secrecy surrounding her wedding to Justin Theroux.

"So, I am your friend," DeGeneres said. "And I know everything about you. Not everything, but a lot. But if I weren't your friend and being a talk show host and you're my guest on, it is mandatory for me to discuss the crazy constant rumors of the wedding and all the stuff. I know for a fact that I'll know when the wedding is. But sometimes, because it is so secretive, none of your friends [know when it will be]."

"Like when we're invited, we just go, 'We can't be in town, but should we be in town...?'" she added.

Jennifer Aniston, Ellen Degeneres, Ellen Show

Michael Rozman/Warner Bros

"It's funny, actually. Our friends [Sacha Baron Cohen and Isla Fisher] have shown up for four parties, four little gatherings," the actress recalled. "They would show up in beautiful wedding wear. Even like the 4th of July last year, they showed up and Sacha was in a powder blue suit and Isla was in a little cute dress. And we were like, 'Guys, it's the 4th of July! We're in cutoffs and eating hotdogs. We will actually let you know!' But like Thanksgiving, I had a friend who said, 'I can't come this year, but should I?'"

"One time that I remember, [Portia De Rossi] and I called because it was very secretive. It was like, 'There may be a thing this weekend. We'll let you know where it is.' We were like, 'Oh, should we make it?'" DeGeneres said. We didn't come because we heard we didn't need to." Aniston said, "That's right!"

"She's always like, 'Do we need to?' and I'm like, 'No, but I want you to!'" Aniston said.

"I'm very busy and I go out of town every weekend," DeGeneres explained.

"I know," Aniston conceded. "It has to be well worth your time for you to stay."

PHOTOS: Jennifer Aniston's quotes on love, marriage and kids