It would appear that Trump has bottled it .He has refused to attend the annual White House Correspondents' Association dinner ,an event that traditionally includes a light hearted 'roast' of the sitting president .It would appear that despite attending the dinner several times in the past and saying he loves it Trumps sense of humour does not extend to people making fun of him
http://www.bbc.co.uk/news/world-us-canada-39093434