Who is Max??

All weekend I've been getting asked how I would feel if Max came to stay? All I've heard is Max Max Max. Who is this Dude?? Would he eat my food? Sit on my family's knee? Make a noise? How do I know if I want him to come? I don't really like other dogs you know - but apparently he's my brother!!
Can someone help me make a decision? And if he came, what if we just didn't get on together?? oh my questions, questions, questions??????????????

Leave me alone, I'm thinking about it!!