everybody knows what it is by now, the important thing to do is enter it into this dictionary using a good example. "wasd" failed by using an un funny simpsons episode. (anything from approx. the year 2000+) Yes...satellite falls on pants...funny...
someone: (something)
homer: d'oh
(yes, i am aware that this is a bad example...i...just...don't...care)
Expressing frustration at the realization that things have turned out badly or not as planned or that one has just said or done something foolish. Also implying that another person has said or done something foolish.