Every time someone makes a crack about "Hey, you made it to work alive again today!", I have to resist the temptation to smack them silly.
Despite multiple conversations in which I repeatedly pointed out that cycling is no more dangerous than driving when done correctly, people still see me as "that crazy guy who bikes to work".
Then they run off to yammer about how unfortunate it is that they are out of shape (I am literally one of two people in the office that has some sort of physical fitness program), and complain that the fast food that they order every day has too many calories...and then they brighten up as they realize that they can drink vitamin water and that will help them lose weight.
Did I mention that I have to suppress my instinctive reactions to these folks?