"Excuse me?" or "I beg your pardon?" would be considered better manners.
That's not an idiom, it's just a statement. Someone is saying they got no response to a question or action.
When someone say thank you to you in Chinese, you may reciprocate by saying: 不用客气 bù​ yòng​ kè ​qi​ - meaning 'You are welcome' or 'No need to stand on ceremony'
Usually said in response to someone saying "Thank you." What you are are saying is that you are pleased to do/say whatever you did for them and they are welcome to the help you have given to them.
This saying is in response to someone saying they are bored. It means that there is always something to do, with the number two referring to defecation.
SLANDER
Think it means I love ya too
Maybe you should say it. Let it just 'slip' and if the response in undesirable, pretend you didn't realize you said it. Tell him it's a 'systematic response' or something you are so used to saying to your mom or brother or someone and then go from there.
"Top of the morning to you" is an Irish saying that means " I wish the best of the morning to you." or to have a good morning. The proper response would be "and the rest of the day to you".
Such a person can be called a gold digger.
That would be 'to insinuate'
The proper word or another way of saying awesome is the word 'stupendous'.
A Blasphemer. You are not Jesus and saying you are is called "Blasphemy"