Yes, I know, LOLcode? What? Well it exists. And it's extremely easy to use. I do it on occasion. It's hilarious. Why the short sentences? WHY NOT!?!?!?!?!?! The official guide is here and an in-browser interpreter is here. (be careful on that, some of the languages on it don't have, uhh, the most appropriate of names)
Anyways, for those who do not want to visit the websites listed above, here is a simple code in LOLcode:

HAI 1.2
VISIBLE “HAI WORLD!”
BTW this is a comment
OBTW
This is a multiple line comment! You know what that means? giurhuvrnuuuuuuuuuuuuuuuuuuuugiuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu. Also,this code is the basic, “Hello world!” that is in tutorials for every code. Except it says, “HAI WORLD!”
TLDR
KTHXBYE

Slang terms in this:
HAI is hi
KTHXBYE is okay, thanks, bye
BTW is by the way
OBTW is oh, by the way
TLDR is too long; didn't read

I'll learn it!

HAI 1.2
VISIBLE “Hello World”
KTHXBYE