I heard this somewhere out East while in the clag and trying to find an approach plate:
Piper: Center, Lance Six Two Eight One November, with you at 7,000 feet.
Center (sounding tired): Lance, Six Two Eight One November, roger. But two things: first you don't need to say "feet" because that's understood. And more importantly, you aren't "with me." I know everybody in this radar room, and you aren't here.