The other day at Hamilton, New Zealand (NZHN 122.9MHz) there was a female trainee controller on the frequency (every now and then you could hear her OJTI (instructor) talking in the background).
The controller had a C206 transitting the Control Zone to the south (ZK-EJE) and a 152 (ZK-EJZ - similar callsign) taxiing on the ground. Needing to check the position of the C206 (ZK-EJE) before clearing a southbound Saab 340 for takeoff the following was heard:
Trainee ATCO: "Echo Juliet Zulu, report level and position"
ZK-EJZ (a particularly quick thinking instructor): "172feet (aerodrome elevation) at Holding Point Charlie"
Trainee ATCO: "Ahhhhhh.....Roger?!?" [sounds of raucous laughter from the instructor in the background]
FOr the next few minutes everytime the trainee spoke you could hear the instructor wetting himself in the background.