Just as Kelly Slater used his wave priority to stuff Joel Parkinson on a nice barrel, Parko showed off the 1 finger salute. While dropping in like this would never fly on a regular day of surfing, all is fair in love, war, and championship battles. At least they both admitted it was all in good fun after the contest.
Perhaps, this is just karma. In the 2003 Pipeline finals Parko prevented Slater from going on a wave, but claims it was an not an 'intentional' block in an interview from the March 2013 Surfer magazine. Missing that wave cost Slater critical points, and Andy Irons took the championship.