Basically mean Okay. I get it. STFU.
Also, used as "whatever" at teachers or boring conversations.
Math teacher: Anyone got it?
Kid: Sure, sure. *Got back to desk, Listens to iPod, forgetting the work*
Girlfriend: ZOMG! Did you just saw him with her? I cannot believe his with her already just right after our broke up! Blablablblablblaaa
Me: Sure, sure.
Girlfriend: Are. You. Even. Listening.
Me: ...
Madame: Please sir could you give me a hand with these groceries ?
Gentleman: Sure Thing, Madame.
Madame: Thank's a lot, you're a sweety
Gentleman: No problem madame, glad to help ya.
A kind of general response that can be either yes or no or basicallyeverything.
This expression is to be used when you do not know how to answer a question, but you feel you should respond to it.