How to respond to pfff, lol, XD?

"Quit laughing, you fucking bloody wank."

I hate it when people do that. It's hard to respond to stuff like that.

You could probably try to tell your friend to try and be a little mais chatty or contribute mais to the conversation.

Repeat them.

I have seen it happening a lot. It depends on the subject you're talking about. There are times when people might not know how to respond exactly to a certain kind of pergunta or comment. It's an awkward situation so they reply as simple as they can. Of course there is always the possibility that they might not feel like talking, being busy or not feeling well so they will try to end the conversation with something like that. When you ask your friend a pergunta try to do it in a way that a mais legit answer is required or just simply ask him to be mais descriptive. To tell you what he/she thinks !!!!

sorry for not responding early, anyways, i like you

I just assume that the conversation has reached its natural conclusion.