Donald Rumsfeld -- I've Got TITANIUM In My Pants!

Former Secretary of Defense Donald Rumsfeld is EXPLAINING his TSA pat-down at Chigago's O'Hare airport this week ... chalking the whole thing up to some bionic body parts! After TMZ posted the photos of Rummy  getting his pat-down on Wednesday ... Donald went to his Twitter page (yes, Donald has a TWITTER page!!) and dropped the following statement: "It takes those of us with two titanium hips and a titanium shoulder a bit longer to get through TSA ..."Then, Rummy actually LINKED to our TMZ article!! That's right ... we got a direct line to a guy who used to kick it at the Pentagon!  We bad.