I am involved in a voluntary home defense pilot group in the northern part of Sweden. We only fly Cessnas and Pipers on a regular basis, and our pilots are mainly bush pilots, not accustomed to using the radio often. During a training weekend at a controlled airport, we had a landing session, with five or six aircraft in the circuit, and the guy in the tower has a busy time keeping us all sorted out. We then heard the following exchange over the radio:
"Sierra Echo XXX, state your position."
"Aeum ... I'm behind the one in front of me!"