HEY JOHN! IT'S OVER! YOU LOST! JOHN? WAKE UP, SENATOR! Oh, nevermind. Somebody put a mirror under his nose.
A fascinating mix of exactly what you'd expect McCain to Twitter ('I am working in my office on Capitol Hill today.", "I'm traveling today with Senator Lindsey Graham and Senator Joe Lieberman.", "GET OFF MY LAWN!"), and bizarre use of internet acronyms that no one over 25 uses (ICYMI).