the term 1337, also "leet", is used to describe somthing of excellent quality "this pwnage is uber 1337(leet).
This is a language typically used in internet gaming and some people stereotypically this its only used by a select few called "Nerds".
But, leetspeek, also leetspeak is used pretty much by all internet gamers and is not in any way a "Nerd Term"
as some call it.

The Paris Agreement is a treaty that was signed by the leaders of 195 countries. The purpose of the agreement is to signficantly reduce global warming and emissions by 2020. By 2100, the Paris Agreement intends to eliminate emissions altogether and end global warming for good.

A boolean search engine that rivals even the great wordgoogle/word

The home to all of your get withs, especially if you are a Crisis balcony warrior.

1. The act of being or partaking in thuggish behavior. Holding up the standards of real "thug life".

2. Sacajawea's ballin' ass boyfriend. Responsible for Lewis and clarks successful exploration of the Louisiana Purchase. He hooked it up!!!!

Da 'Cheddahhh' is what all street downhill skaters are lookin for. You dont want no swiss-grader that'll be rippin up your wheels, you want da cheddahhh.
Due to it's awesomeness and popularity, you may also use it instead of "cool".