What's up?
Not much. Its frezzing in Beijing.
U should come to Bangkok. We've got lovely weather here.
Great! R y inviting me?
Laughing out loud.
Be right back.
Where r u going?
Bathroom.
Ok. I'm going to go to bathroom too. Talk to you later.
When people chat online, they often shorten words. Use abbreviations, use lower case letters, and rarely use punctuation marks, especially apostrophe marks.