Motivational Speaker Daniel Negreanu?
With the board reading 
Matt Marafioti checked the action over to Daniel Negreanu who bet 6,000. Marafioti looked visibly upset as he tanked for a few minutes and then tossed his cards into the air toward the muck. One of his cards flipped over onto the table revealing a 
and Daniel said "You had kings, right?" Marafioti said nothing and Daniel offered to show one card. Another player at the table pointed to one of Daniel's cards and a 
was flipped over.
Marafioti still looked upset and Daniel proceeded to give him a pep talk saying "You're young, you've got money, you just made a good laydown. You should feel good about yourself."
Hard to know for sure whether Daniel was telling the truth but Marafioti can't be too upset as he still had around 80,000 after the hand was over. Daniel currently has around 41,000.