What is the origin of the idiom keep in fits?

What is the proper formal salutation for a male adolescent? Is served an adverb? What does black on black attire mean? What does Comment allez-vous s'il vous plait mean? What does 5o in the house mean? What is meaning of put in a barb? What is a sentence using manner? Ne pas y aller par quatre chemins? Why do you use hereby in letter writing? What it means when a Girl says you will get back to you? What is the origin of the idiom at wits end? How was Mrs Ples found? Where do the addresses go when you send a letter? Does the need to be upper case when signing a card the Jones Family? People that live in glass houses? How would you write the word faux pas in a sentence? When is it appropriate to use persons instead of people? What is the hawaiian for best regards? What does it mean when someone calls you a different name? What does the idiom won't do a hands turn mean?