[nq:1]Suppose someone did you some favor and you say to him words of thankfulness, and then he replies, 'Sure' or ... and the 'Yeah I am talking to you' in the context in question? [/nq] Not a native speaker of English, but I'd hazard a guess that sure might be "you're welcome" in a very casual, informal way.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.