Who knew Kristen Stewart had an oral fixation! We should have known, all that lip-biting, and uncomfortableness.

Last night the 22-year-old ‘Twilight’ star told Conan O’Brien that she recently quit smoking (say what!?), but claims it was easy because she was never addicted.

“I was a bit of a faker, a circumstantial smoker. I just feel like I wasn’t addicted to nicotine,” Stewart explained and tried to carefully choose her next words, before giving in. “I just wanted something in my mouth.”

With her cheating scandal and the “trampire” label some publications attached to her, it’s good to see Stewart still has her sense of humor.

“Why did I do that?” she asked O’Brien, as a her face turned red from embarrassment.

“I’m glad for the Internet that you did do that,” Conan responded.

The star of “Breaking Dawn – Part 2,” which hits theaters Nov. 16, was full of one-liners last night. Stewart also revealed to Conan that her father is “a total famewhore.”

Though Stewart may not appreciate the constant attention, there’s nothing her dad likes more:

“You go anywhere, even if I’m not with him, he’s like, ‘Hey, I’m John. Stewart. Father of Kristen… Have you ever seen ‘Twilight?’ Yeah, well, that’s my kid!’”

PS: Here are some new pictures of Kristen, Robert and Taylor at a ‘Breaking Dawn 2′ photocall in Madrid, Spain, last night. Is it just me, or does Robert and Kristen’s body language look awfully stiff? I spy with my little eye……… awkwardness! And for those of you asking yourselves…. what does she expect? Them to just make out on the red carpet!? Well yes. Yes I do.

Source, Photos: FameFlynet