• 
  "ironman is not a as tough as everyone says it is", a woman I did not know walks up to me at birthday party for our kids
  
• 
  "you don't have to train for it do you", my dentist
  
• 
  "I talked to a friend who did one and he said if I trained I could probably beat you"... father-in-law
  
• 
  "most people finish in under 8 hours... right?", I think she knew I finished in 14 hours... oh and this was followed by some people who talked loud enough so I could hear, "do you think you could complete on. ya"
  
• 
  "you PRed but you hardly improved"
  

Plenty more... I don't bring up ironman in conversations, people learn from my wife or others. Maybe I don't look or act like someone who could complete one... but I have completed 4 full IMs... and it seems all I get are people belittling it all.

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I have another account here... I don't want to attach this to it. And yes these are all lines I got. Did you look at who said them?