What 2 reply when someone says you are honoured?

What is the proper salutation in a letter addressed to husband and wife where husband is jr? Is that won't do the trick slang or informal idiom? What does a upside down exclamation point mean? What is informal introduction? How do you say hello nan and grandad in french? Can you eat while there is a pencil in your mouth? How do you say 'have a great time in Paris' to a friend? How do you say Goodbye and Welcome in French? How do you say greetings in flemish? How do you say Vous etes le gars le plus etonnant jamais in English? Where did this famous quote come from Greetings and Salutations? Is the popped collar still in fashion? What does the idiom to big for your boots mean? How do you describe someone punctuality at workplace? How many times a person say thank you? How much are ties? What does 'the chips are always down when its our turn' mean? How should service be refused? How do you say please everyone in French? What does Terminé Mon ami mean?