A sure sign that it's true love between Brad Pitt and Angelina Jolie? One fateful, ennui-filled evening, she grabbed a pen and doodled on his back, as one is wont to do -- and he was so tickled he made her impromptu design permanent.

Entertainment Weekly quizzed the twinfanticipating, "Wanted"-promoting megastar about the oddball tattoo decorating her amour's lower back, a grouping of lines that some have speculated was inspired by the New Orleans levee system (see the ink stain here.)

"I drew that," confesses Jolie. "We went to Davos [Switzerland]. It's not that we were bored at the World Economic Forum, but one night we didn't have anything to do, so I was drawing on his back."

When asked why Pitt felt her sketch warranted an indelible mark on his body, she shrugged, "He just liked it! The picture everybody saw was kind of awkward, but it just lines up beautifully on his back, just enhances the part of the body I like."

Angelina shows off the "angles and shapes" of her twin-stuffed belly at the Cannes Film Festival.

As for the deeper significance of the tat, the French chateau-dwelling mom of Maddox, 6, Pax, 4, Zahara, 3, and Shiloh, 2, offers, "It's meaningful in that it's us making angles and shapes out of each other's body, that kind of a thing."

Few topics are off limits in the EW interview for the forthright Jolie, who opens up about their double bundle of joy bombshell, her blood-sharing with ex-husband Billy Bob Thornton and how good sex is while pregnant (hint: It's very, very good). Here are some of the highlights:

On how they'll handle six kids age 6 and under: "Well, we weren't expecting twins! So it did shock us, and we jumped to six quickly. But we like a challenge. We really don't know. His mom and dad are on standby to come out and help. And fortunately we can hire help if we need it, but we're going to try as we usually do to balance it as well as we can."

On whether she has any regrets in life, like wearing that blood vial necklace from Billy Bob: "No! It was never a vial anyway. It was like a flower press. It was like from a slight cut on your finger and you press your fingerprint in. It was kind of a sweet gesture. I thought it was kind of romantic! I still love him dearly and think the world of him and I'm proud to have been his wife for a time. I don't believe in regrets. It's a dangerous habit to get into -- it makes you pause in your life if you start thinking back and questioning yourself."

Maddox takes a break from contemplating war scenarios to take in the Italian Grand Prix with his dad.

On her newest peculiar pendant: "Mad, our 6-year-old, draws lots of war scenarios. He's all into war and guns. So for Mother's Day he drew a machine gun, and Brad had it made into a necklace, which is really sweet. It's really cute. I think it's really good!"

On balancing passion and parenting with Pitt: "... There's a side of us that's so mommy-daddy and then there's a side of us that's ... very man and woman. I'll leave it at that. We both like to ride motorcycles, we both like to fly planes, that's the spirited side of us. Then the other side of us is very focused on silly mommy-daddy things. So I guess that's extremes, but I just think of that as balance."

On knocked-up nookie: "[Pregnancy] is great for the sex life. It just makes you a lot more creative. So you have fun, and as a woman you're just so round and full."

On having Pitt at her beck and call: "The only thing that's hard for me now is with twins and having four kids, there's a lot of the doctor saying, 'Stop picking them up as much.' But we've worked out a system where Brad just lifts them to me every time they want to come up. I just don't bend down. I'll scream, 'Honey!' and he'll come running and lift them up. Or they climb on chairs, so it's not as big of a lift. So we're trying to follow doctor's orders, but I'm bending them a tiny bit."

On her idea of a perfect Saturday: "I have a lot of those. Very simple things. On weekends we usually have family sleep. We always have one night a week where everybody stays up late, watches a movie, and stays in our bed. We have, like, a slumber party."

On the difficulty of buying presents for Pitt: "Brad is the hardest person to shop for. He has impeccable design taste. And whenever he sees something he likes, he buys it for himself."

On taking out Hitler: "I am a strong believer that without justice there is no peace. No lasting peace, anyway ... I'm not somebody that just wants to hold up a white flag and say, 'Let's all just get along.' I think people that do horrible things should be held accountable. I don't think like in 'Wanted' -- which is an action movie -- people should [just] be killed. I think there should be trials and justice. But the idea behind 'Wanted' is not that she's a bad-ass assassin that just likes to kill people. It's that, if you ran into Hitler before he did everything, and you knew, should you shoot him? And I would."

On talking politics with her Republican "Changeling" director, Clint Eastwood: "Actually, we don't disagree as much as you'd think. I think people assume I'm a Democrat. But I'm registered independent and I'm still undecided. So I'm looking at McCain as well as Obama. Clint can teach me about things domestically and I'm more aware of some things internationally. So it was less a debate and more things we found interesting. But for the first few weeks I was just too nervous to get into any deep conversation!"

On being open about her knife-punctuated Goth girl phase: "The reason I talked about going through certain pains or even cutting myself is that I was already out the other side. I knew there were people that do that -- and somehow are happy that somebody admitted they did and discussed how they got out of it. I don't see the point of doing an interview unless you're going to share the things you learn in life and the mistakes you make."

On how she's either loved or loathed: "I think anybody that makes a decision about where they stand is going to cause strong opinions about them. But I think that's what you should be hoping for in life, so I take that as a very good sign. That some people support me and some people really don't like me tells me that I'm making decisions and I'm standing strong for something I believe in. I'm making choices in life. And that's the right thing to do."

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