Passed my PMP exam on 7/29.  First try.  I took all 4hrs, marking the Huh, WTF? questions and coming back to them.  I think i had 19secs left when i finally hit end exam.  The screen after like 3 pointless minutes said Congratulations.  It took me like 30 seconds to understand what congratulations meant because i was so mentally drained.  

I guess this means im an expert at answering tricky questions.  Thats what i felt like it really gauged.