Despite the DUmmy protest, to "swiftboat" means "to expose the truth in a purported history, especially (but not limited to) Military Service."
j f'ing kerry lied about his 4 month service in Vietnam and was exposed by his colleagues. He whined his way into getting 3 owies into 3 "official" wounds, thus enabling him to invoke the 3-wound rule and get the hell out of there. His one foray was a screaming run into an empty village, and he once again whined his way into a medal. His :seared" memory has been factually proven to be a falsehood.
Compare that to the service John McCain provided. Although not the best pilot (and McCain has never said otherwise), he still served and served admirably -- and of course he did his time in a Vietnam prison -- and TURNED DOWN a chance to be released if the release didn't include his brothers in arms. Since the truth merely enhances McCain's service record, I think we should all invite "SwiftBoating" -- the truth works in his favor.