✔ 最佳答案
‘どんだけ’is already out in japan now. i guess the expression will be dead totally within this year.
this word doesnt exactly have a meaning. when you are surprised , u can use どんだけ
similar word: まじかよ!'really?' 'unbelievable' 'great!'
actually どんだけ was a short form of どれだけ which mean how many, how much or in a negative meaning of 'no matter of. '. and gay people in 新宿二丁目(japanese famous gay toen in tokyo) changed the meaning a little as a exclamation when they r stunned. this word was merely popular in 新宿二丁目 but once a famous gay makeup artist IKKO used it in a TV programme then the new word had become famous nationwide.