1/12 What is the beef?

I do not know why everybody ask me "where is the dinner?" while I am eating dinner. They have already lived home stay for 2 months. I connot understand why.

Today, someone asked me a stupid question while we were eating dinner. He asked me " What does beef made of ? Is it make of pork or cow?" I could not understand why he asked this question because he studied in same level as me and graduated from university, and he is a Muslem.