Tupela, mention1 etc. visual on top can be very useful to know if we want a visual go-through. Stop giving bad advice. On thread; I was sitting next to a national- who is a very good mimic- and he was speaking to each aircraft with the appropriate accent ie British accent for speedbird etc. He became unstuck after Iranian Gulf123- Iranian accent. Response- Aussie pilot. Dillman456- Bahrainy- Aussie pilot. Oman Air789 Omani accent- Aussie pilot. Emirates7 Aussie pilot. Gulf Air123 Aussie pilot. Next aircraft to call QF15. He just says "okay, I give up".