Crusher is Coming! by Bob Graham
Crusher is coming to tea and Peter is terrified that his family will embarrass him in front of his tough schoolmate. If only his mother and little sister weren't going to be there...When Crusher comes to tea, Peter has all sorts of plans for what they'll do. Crusher, on the other hand, doesn't seem to be interested in watching videos or reading comics in the treehouse. He's having fun playing with Peter's little sister, Claire!