Gaahhhh. Feh. OMG. No he didn’t.
But…yes, unfortunately — inevitably? — he did.
Trump managed to implode faster than, well, something that implodes really fast. Come up with your own analogies. (Post them in the comments section and we’ll have a contest.)
After riding the crest of a wave for three weeks, speaking for Mr. and Mrs. Joe America on the subject of out-of-hand illegal immigration, Trump crashed and burned in Iowa, lobbing a few seconds’ worth of campaign-ending trash talk at John McCain.
Daniel Halper had the story at Weekly Standard (h/t: Hot Air):
Speaking today in Iowa, Donald Trump attacked John McCain for being a former prisoner of war.
The Optimistic Conservative 
Trump was heard whispering in private conversation that “John McCain’s only real accomplishments were not successfully completing his mission and losing a million dollar asset (Skyhawk dive bomber) in the process.” Yet to be confirmed.