If I walked into my house and found people I did not know in it, whether they were eating a slice of cake or burglarizing me, the first thing I’m going to do is call the damn cops. What other possible option is there? You’ve been broken into! Don’t try and ask a bunch of whimsical, stupid questions, don’t ask them to stay dinner….CALL THE POLICE. What kind of people would not do that? They’re not guests. They’re criminals. They illegally entered your home. Be thankful all they’re doing is eating cake. This isn’t an opportunity to make some new friends.