One day, a girl is in the taxi. She is the only one in there. She asked for the minimum amount of payment. The driver said: "the minimum is 7.50". The girl only found 3.75 in herself. She noticed that the driver's eyes are crossed. So anything he can see will be doubled. Then on their destination, the girl paid 3.75, (when doubled, it will be 7.50) but the driver said: "This is not enough". The girl answered: "B-but why?" The driver replied:"because you have a twin right there.
Dun...dun...dun...dun...
