"Air Lanka" joke

Appuhamy uncle was booked into a flight to London from Colombo. But as
this was his first time in an aeroplane, he made a few preparations
that were out of place. When the stewardess came around to take orders
for the in-flight meal, the uncle declared loudly, "I have brought my
own lunch. Make sure you don't charge me for food and drinks!"
So, as everybody was given their in-flight meal, the uncle began
spreading out his own home-cooked meal. The man sitting next to him was
an English history researcher, who was curious about the food."Excuse
me, what is that
drink?" he asked. The uncle picked up the yoghurt-based lassi drink and
said, "Milk of Lanka!"
Then the uncle took out Kiribath and started feasting.
"And what is that dish?" asked the curious English. "Rice of Lanka! "
replied Appuhamy uncle proudly.
Finally, the uncle took out some Wattalapam desserts. He offered some to
the English. "What is it?" asked the English "Sweet of Lanka! Replied
the Appuhamy
After the meal, everyone was settling down when there was a loud
"Pooooooooooot!" from the uncle
"What was that?" asked the English, holding his nose in disgust.
Appuhamy replied coolly, "That's Air Lanka!"