The title of the chapter in my book is:
I know that this has something to do with Maruko being lucky but I don't understand precisely what is meant. Does Maruko have the inherent property of being lucky? Does Maruko get lucky as a one-off event? Something else?
つく is one of those unpleasant verbs with a million and one different meanings. Does it have a clear meaning in this case or should I just treat うんをつく as a set phrase?