Because that is what "the Donald's" real last name used to be before they changed it to Trump.
Last night John Oliver dared "the Donald" to sue him in court when he unleashed the mother of all Drumpf attacks. You can see this at
https://www.youtube.com/user/LastWeekTonight where John Oliver stated that Donald Drumpf lied when he said that John Oliver had invited him several times and then went on the offensive against "the Donald" Drumpf himself for all the things his supporters said they so loved about him, including the self-funding claim, the business success claim (showing too that Drumpf, even though he claimed he never settled lawsuits, settles several lawsuits). He even showed that a lot of Donald Drumpf's empire is based largely based on his "brand" which he claims is worth three billion dollars. When he sued a writer who claimed that Drumpf (just love that name, much better than his new chosen name, which again shows that he is also a hypocrite) was only worth between 150 and 250 million dollars, that writer got sued by Donald Drumpf for a cool 5 billion dollars (lawsuits he both lost) and when asked how he determined what his worth was (during the deposition) he said that the estimate of his net worth fluctuated based on "feeling, even my own feelings ..... and that can change rapidly from day to day".
Just watch it, it is hilarious for me as a Trump critical person who is of the opinion that Donald Drumpf is a bully with a TV personality that is totally at odds with the personal qualities someone needs if he/she wants to be president.
Oliver even created this website called
donaldjdrumpf.com where you can buy hats with the text "Make Donald Drumpf again". You can also (if you use Chrome) is download an extension that changes Trump's name into the name "Drumpf".
So this all boils down to this question?:
Is John Oliver going to get sued by this thin skinned orange haired Donald Drumpf?