Well, his mother, Ivana Trump, dropped some clues as to why Lil' Don is such a turd with her new book, Raising Trump.
The Czech-American businesswoman also boasted of having a direct line to the White House which she uses to she talk to the President about once every 14 days.
Ivana and Donald Trump divorced in 1992 after 15 years following his tabloid affair with TV personality Marla Maples, reports CNN.
She added: "I don't want to call him there because Melania is there and I don't want to cause any kind of jealousy or something like that because I'm basically first Trump wife".
The office of the actual First Lady of the United States didn't take too kindly to that assertion.
"Mrs Trump has made the White House a home for [their son] Barron and The President", it read.
After graduating from Princeton University, Michelle Obama was a graduate of Harvard Law School and was first lady of United States to be a highly licensed first.
Now, "the feud is on" between the two, a source tells Radar, as Ivana is seemingly furious over Melania's reaction, and claims she's "going to pay for it". Unfortunately only attention seeking and self-serving noise'. But she expressed support for her ex-husband's role, saying Donald is a good man, and he is trying to do the best he can. Or you could think of it like the TV show "Gilmore Girls", in which Lorelai Gilmore names her daughter Lorelai but calls her Rory. There is no clear foundation for this statement from a former one.