Gonna be brutally honest here about what occurs on race day:
#1: You never sleep the night before your A++++ race
#2: Taking a dump prior to the race start is a necessity (why do you think the porto-potty line is so long...)
#3: Timing that dump is critical to race day success
#4: You always see two types of people in transition: The overconfident type and the scared shitless type
#5: Peeing in your wetsuit is a necessity (why do you think everyone is just standing around in the water?)
#6: When lining up at the start line, all you want to do is quit the sport
#7: When lining up at the start line, all of the tall people intimidate you (I am a short guy @ 5'7")
#8: Coming out of the swim basically completes the day; that hard part is over with
#9: Your legs feel like utter crap starting the bike; why are they iced?
#10: Passing the dude with the full aero diskwheel/helmet setup is awesome
#11: Farting on the bike happens. EVERYONE farts!
#12: You feel like a rockstar hitting the dismount line off the bike. You have the look of a rockstar.
#13: Spectators think you are a rockstar
#14: The first mile of the run SUCKS
#15: Seeing a fast mile 1 run split completes the day
#16: The nervous talker on the run REALLY is annoying
#17 The last 100 yards staring at the finish line feels like it takes an hour
#18: Crossing that finish line is the best thing in the world
#19: You always think you just won your age group
#20: The next morning's soreness is worse than any hangover
So there you have it. Observations of three complete seasons of racing. Feel free to add any of yours!