I am sorry that you are having trouble. However, with practice you will find you will understand it better and better.
As andrewq927 mentions in a post. You should be very careful about assigning Mr./Miss/Mrs./Ms. to someone's web handle. In this case you guessed correctly and I am male. Also, saying Mr. Lynxear makes the name very formal. We are not that formal here.
And we don't really know if Lynxear is the gentleman's first name or family name, and we don't use Mr/Ms, etc, with first names without surnames. Usernames don't give us that information. If his name is Lynxear Postlethwaite, it would not be correct to call him Mr Lynxear. You could call him Mr Postlethwaite, or Mr Lynxear Postlethwaite.
I'm Chinese. It's surprising to see these words being mentioned here, they are translated literally from Chinese sentences in Chinese order. They're just jokes for us, not even an informal expression. When a Chinese people say any of these Chinglish, he/she is kidding. These words are for Chinese people only, we don't say English like this when we talk to a native speaker. On top of this, these words are used to ironize the unsuccessful English education in China.