Aye!, it's a braw, bricht, moonlicht nicht th'nicht!
Jokova where's yer troosers!
A student on our approach procedural course tried this on the simulator at ATC college.
Student
"G-XXXX, climb flight level 60"
--no response--
"G-XXXX, climb flight level 60"
--no response--
Student (somewhat nervously)
"G-XXXX, Approach?"
--no response--
Instructor to student
"I'll give you a clue.....do you think his radio might have failed?"
Student (intends to apply the speechless procedure)
"G-XXXX, Approach, if you are receiving this transmisson click once for YES. If you ARE NOT receiving this transmission, click twice for NO"
Sim Pilot
"(click) (click)"
The instructor almost folded in half. It then took both the Student and Sim Pilot another minute to realise what had just happened, just enough time for the instructor to wipe the tears away!
D'oh!