Three couples say A-A', B-B' and C-C' are stranded in an island. Luckily for them, there is a boat that can carry them to the other side of the shore. But only two people may travel in the boat at any point of time. All the husbands are "sandhega praanis". They don't trust their wife staying or riding with other men in their absence. How do everyone reach the other side without having to compromise on integrity.
PS: no one knows swimming and there is no long rope to tie to the boat and pull it from the other side. Also no one can think or act like Vijayakanth. The only means of transportation is the boat.
Here is another one that is in Japanese. Figure it out for yourself.