Slang Word List

Student: Oscar
Country: Mexico

HI MR. TEACHER
THIS IS OSCAR SANCHEZ FROM MEXICO, I WAS WATCHING YOUR VIDEO ABOUT SLANG WORDS, ONE YEAR AGO I WAS LIVING IN USA CALIFORNIA, THERE I HEAR A LOT OF SLANG WORDS, I WAN TO LEARN MORE ABOUT THESE WORDS, I WONDER IF YOU CAN SEND ME A LIST.

THANKS
OSCAR S.

How to speak like a native English speaker?

Student: Peter
Country: China

How can I learn to speak like native English speaker?

Why write "X" after name?

Student: Kary
Country: Hong Kong

First question, i would like to ask, why people usually write an "x" after the name?