When someone thinks you are a newbie... and you have been riding 4 years.

[Trek420]

I had to hold back telling one guy, "Look! I'm not new. I've been riding for years. So yea, I know that when I got salt on my shirt that means I've lost salt that I need to replace."

"and I got it by riding for years like this ...." and drop him Helps if you take some sips from the water bottle while leaving him in the dust.