Gotta love this Trump tweet -
Make the out of your ass claim and then get pissed off when it's reported that you have no evidence behind it and want the reporter to disprove what you said rather than Trump himself having to prove factual basis for your claim.
Trump: I won Popular vote as millions illegally voted.
Reporter: Prove it!
Trump: No, you prove it didn't happen. And while doing that, I'll move on to my next bullshit statement and sell it as fact that you'll then have to disprove rather than me having to support it with any evidence.
Basically it's a Gish Gallop.
http://rationalwiki.org/wiki/Gish_Gallop