Why is there no mistake in the phrase "first damn coma"? Is "katavasiya" connected with the cat Vasya? When are the dog days coming? Why not ask “who is the last”? How to stop confusing the verbs “put on” and “dress"? You will find answers to these and many other difficult questions in this book. Especially for our readers, the author of the popular Russian blog instagram "Great Russian" @great_russian Polina Masalygina reworked and supplemented her best articles, which reveal the most unexpected tricks of our great Russian language.