We all look alike to them.

I'm doing a lesson on describing people.  I use this picture of David Beckham as an example of a shaved head:

 

In one of my classes, a group of girls formed a committee, nominated a spokesperson and asked if this is a picture of me.

Also, like three times now, classes have responded to a picture of Michelle Obama with "Oprah!"  So I guess it's true:  we all look alike to them.