The extreme need to pee
First invented by Jay Bennett, Valentine's Day 2009

Secondly invented by The Greeb Brothers (John and Hank green) on their podcast Dear Hank and John October 24, 2016

A blader is a person who roller blades very well. A blader is also a person who believes that rollerblading is not a sport, its a passion and a way of life.

A man who goes rollerskating a lot. He does that rollerskating very good because he is probably rollerskating for a long time. Like skaters, the bladers also do tricks and grind.

Someone who rides inline skates.
Comes from the name of the well known company Rollerblade.
Usually meaning someone into "agressive skating", which means people doing tricks on skates (slides, jumps, in places like streets, ramps or skateparks).

It's the equivalent of skater (skateboarder), but on roller-skates.
Like for skaters, there should not be any link between this word and a specific music, clothing style, skill level, or whatever : It just describes someone who likes to have fun on inline skates.

A serious player of beyblades.

A real ass hasagi blade. Only one has been know to man so far, his name is Hybridera and he a real ass Canton nigga

someone who goes around knifing their enemies in call of duty modern warfare 2