xD?

Used in response to a questionable action or decision made by a friend or colleague. Mostly used to laugh at the individual, making them realise their mistake.

Thomas: Hitler was a good man.
Philip: xD?

Gigaids

The simplified version of giga-aids, when something is terrible or annoying. Using it properly will often leave people baffled while only the smartest of the group will understand.

James: Did you go to Larry's party?
David: Yeah but it was gigaids.
(Larry walks in)
Larry: What did you say about my party?
David: Oh yeah it was great!