What is Didder?
1.
A run-together abbreviation of Dance Dance Revolution, or DDR, usually used by Arcade Goofs on a sugar high.
*bouncybouncybouncy*
Let's play some DidDeR!! Eeep!!
*Vaults over the counter and hacks the coin machine with an axe to get at the game tokens*
2.
A retarded way to say the abbreviation for DDR, often used with, "73H 1337 d00dz 0n 73H f0rumz"
MetalJacketFreak: "omg didder is teh best gaem evar"
ThisGameSucks: "You need a hobby, dipshit."