Following in partner Angelina's footsteps, Brad inked his stomach with a few mysterious lines, whose meaning he has yet to reveal.That must be how he remembers all of his addresses. If that's the case however, he probably regrets putting it in such a hidden location.
Looks more like on his back then stomach to me, but hey, not really into the anatomy of Brad. More interested in Angelina, and her op of the line anatomy.