Me (walking down the street to the grocery store): *whistle whistle, hum hum*
Middle aged guy walking towards me, wearing fedora and perfectly tailored wool coat: "Evening!"
Me: "Hey there!"
Guy (in reference to President Obama's inauguration): "Yesterday was a pretty good day, wasn't it?"
Me: "It sure was. Big day."
Guy: *holds out fist bump*
Me: *fistbumps him*
Guy: "Have a wonderful evening!"
Me: "You too!"