Can also be abbreviated as "idk".
Person 1: Hey, are you still going to the movies with Rob?
Person 2: I donkey kong, he broke up with me last night.
Person 1: Ahahahahah... ;D
Person 1: My brother just died... :'(
Person 2: ...
Person 1: Please say something to comfort me... :'(
Person 2: I donkey kong.
Person 1: Thanks, I feel a lot better now. :) *hug*