"Pickpockets in Slave Island" joke

One day there guys (An American, A Russian and a
Sri Lankan) were travelling around the world.
The American said "we are now flying over New York".
The other two asked "why?", The American replied "we
can see the Sky High buildins".
A few hours later the Russian said "We are now flying
over Russia". The other two said "Why?". The russian
replied "you can see our sky labs".
Finally, the Sri Lankan said "we are now flying over
Slave Island - Sri Lanka". As before the other two said
"Why?". The Sri Lankan replied "I kept my hands out
and my wedding ring is now missing"