McGrath, "Irrits" is just fine. "Absy", however, being a contraction of "absolutely" which is annoying anyway, is not.

While we're on the subject of irrits may I ask a question of our English friends here?

I have noticed while watching TV programs made in England that a question is often answered by another question. As a local scientist used to say on TV here many years ago - why is it so?

An example would be, police person asks of would-be miscreant "where were you at 9 P.M. on Saturday night" to which our wbm replies "I was here, wasn't I?"