What's even more amusing is when a couple of black chums take the pi$$ and see how Whitey struggles to cope....
Back in the days of the G-nat, we had those silly formation callsigns like 'Milvus', 'Fervent', etc including 'Sambar'. One day, a mate who was of Jamaican descent and was having (didn't we all) a difficult point on the course was due to go on a flex trip with the sqn boss who was (I think) of Asian descent. So to brighten things up, they chose 'Sambar'...."Except, soul brother, we'll check in as 'Sambo' and see what the bug.gers make of that" decided the boss. Of course ATC knew who it was but didn't know whether they'd heard right or how to respond; our Jamaican chum relaxed considerably, breezed the trip and was taken off review. Later became a bit of a star on the Jaguar...
Incidentally, the Spams at Upper Heyford didn't like Weston-on-the-Green being referred to as WOtG with a silent 't' either...