What it mean when you call someone a twerp?

Is it possible to shank someone with a knife? What is the meaning of a honest penny in idioms? Should you be concerned if you're not invited to many barmitzvah's? How do you say thankyou in mandarin? What does it mean when you shift in person? What coutry says that tipping a waiter is a insult? What is a word or remark thrown in between others? Should a comma come after Good morning Ms Smith? Phrase what mean to cut a sorry figure? Should work areas be kept clean and tidy? Is it demeaning to tell someone they did something dangerous and stupid? Is putting flowers on grave a ritual? Can you give me a very short sentence for etiquette? If someone is talking and you have to cough really bad but don't want to interrupt when is the appropriate time to cough? What is the slang term for the authentic thing or quality? What is the meaning of il est mon ami? What is the meaning in English of Malayalam phrase madam Saree thane vanamo Churidhar ayalum pore? How do you spell with sincere gratitude in french? What do you put at the end of a imperative sentence? What is etiquette. Give examples of various etiquettes?