The top three contenders are:
"Taco Trucks on Every Corner!!"
Trump's Doctor's Letter. Especially the doctor saying that he likes Trump because he thinks Trump likes him.
I did ask about this in a twitter survey when I could only remember the first two.
So, my question to my readers: is there another moment funnier than these three? If not, which one is the funniest? I will suggest mine in inviso text: Says who?Best unintentional comedy moment of campaign so far:— Steve Saideman (@smsaideman) September 3, 2016