What do you do when you see a famous person?

Say you are walking down the street, or you are inside a shop, o faj2a you see a big celebrity. Local or international, you like them or you hate them, but they are standing right there in the flesh. What do you do?

Some people are brave enough to say hello, others ask for an autograph. Some hesitate and just stare. What kind of person are you?

Ana? I totally ignore them as if they don't exist. I cannot help it 3ogob at7asaf o agool chanzain I said hello b3dain when it happens again I switch into ignorance mood. I guess its better for the famous person because they are already sick from all the attention they get all the time and you never know maybe they are in a bad mood or something that day malhom kholg.

What do you do?