joke (twins)

A woman has twins, and they have to go a business trip. And it has been 2 years. One of them goes to a trip in USA and is named "Jake" also he want's to stay there. The other goes to a trip in Spain and he's named "Juan". and he stay there. Years later, Juan sends a picture of himself to his mum. Upon receiving the picture, she tells her husband that she wishes she also had a picture of Jake. Her husband responds, "But they are twins. If you've seen Juan, you've seen Jake."