That his son hit 5 single line royals on a standard 5 card draw poker game and still lost. IIRC someone even did some kind of calculation given an estimated number of hands(I could be wrong about that). Failing to mention he was also playing 30 coins(that probably accounts for some of the loseing that happend) on a high variance game on a game that probably has a short cycle is shiesty.
But let's count it anyways. It's still not even close to the 5 Royals in 24 hours that he claims happened.