I will think "Duck and Cover!" (i've seen that video. SO AMAZING)
Or "Crap where is the closest vault"
Or depending on how drunk i am "Silly Mortals, Do you think your puny nuclear weapons can kill ODHIN? I AM THE ALL FATHER AND LAUGH AT YOUR SILLY ATOMICS"
Although i have decided that my dying words will be "What ever happened to skate junction?" kind of like a Citizen Kane random reference to my child hood.
Edit: "Oh man, those where some bad mushrooms."
"Well, the Koreans finally did it. Good for them, i allways figured a nuke built by them would just back fire. Hmm."
"Omg, Can i Get a Nuke Tan?"
"Well that's a weird sunrise"
"OMG the mushroom cloud is coming from the direction of San Diego. . . Ironic, all those damn dirty hippies killed by the one thing they kept trying to warn us about."
"Well, nows the time to see if i can hug my kid with nuclear arms."
"You know, i shoulda Saw this coming"
"I think i'm turning japanese, i think i'm turning japanese i really think so. . . ." (bad nagasaki reference?)