In case you haven't noticed, Chris Christie is doing to fat jokes what Hillary Clinton has done to pantsuit jokes — that is, embracing them as his own and demonstrating his good humor with self-deprecation.
[After Fallon makes a fat joke.]
Christie: It hurts. So step off, brother.
Fallon: Isn't that what your scale says every night?
Get used to fat jokes and pantsuit jokes, because it's all we're going to hear once the 2016 race begins.