Heard at a busy Florida airfield...
TWR: "N12345, report your position"
A/c: "Ah, we're right over the US1" (main road on the east coast)
TWR: "Sir, the US1 runs from Key West to Maine. Could you be a little more specific please?"
And in Arizona...
RADAR: "N12345, VFR traffic on your 12 o'clcok, range two miles"
A/c: "No, the traffic is actually a flock of Canada Geese!"
RADAR: "Well, the geese are squawking 7000"