One of our navs at Brize was of Asian descent - he thought the nickname "Chartwallah" was hilarious. Which was politer than 'De Black Ron' as some termed him - which had led to a Wg Cdr from Group once ringing up asking to speak to a Flt Lt 'du Blaqueronne'!
One day the phone went in the crewroom - it was some Fighter Controller lass who wanted to know when sunrise would be at the Taj Mahal on some specific date when her parents would be visiting. The chap who took the call went to look for Chartwallah, who launched into an hilarious Peter Sellers style accent "Ah, good lady, I am looking in my books, indeed to goodness...." which he assured her were from his days at the University of Bombay. She smelt a rat and started giggling, but good old Chartwallah kept it up..."Now, this is indeed most serious research I am doing...". He gave her the answer and hung up, to see the whole crewroom doubled up in hysterics! As was he.