you're supposed to say Mr. Moony presents his compliments to Professor Snape, and begs him to keep his abnormally large nose out of other people's business.
Ok, so has no one ever wondered how a bunch of 4 teenagers were able to make the map of a whole school? AND THAT MAP SHOWS PEOPLE UNDER INVISIBILITY CLOAKS. DEATH HIMSELF CAN'T LOCATE PEOPLE UNDER THAT INVISIBILITY CLOAK. So you have 4 teenagers that have practically defeated death! James Potter who believes they can do anything, Sirius Black who hates rules, Remus Lupin- a genius, Peter Pettigrew who encouraged them and brought them snacks every so often. Hats off to the Marauders.