Trump’s brother. Someone that said they were uncle Rob posted all sorts of hilarious stuff on Twitter.
Didn’t ever see that one, but I did the see the Betty Trump one back in November. https://www.reuters.com/article/uk-factcheck-bettytrump-tweet-parody/fact-check-fabricated-tweet-from-trumps-sister-betty-on-election-outcome-idUSKBN2810R9