Wow, talk about over-reaction, I can't see any problem with this at all. He was supervised, it was obviously quiet and I bet he got a real buzz out of it. Plus in my experience when the 'normal' ATC chatter breaks down every now and then often someone will make a 'whitty' comment over the radio that gives everyone a bit of a break and a giggle. We need it every now and then!! I have had cabin crew on the flight deck and allowed them to make radio transmissions if they really want too, one ATC at Heathrow got quite a shock when his 'girlfriend' replied to a frequency change instruction, it made his day, made her day and no harm done. Everyone needs to chill out.
