Stands for 'I'm Amazing'
Said when you've done something great, or achieved some kind of success. Usually to do with your job.
Usually with a sense of self-aware arrogance.
see also Y.A. – You're Amazing – a reciprocal to I.A
I just exceeded my targets for this month and I've still got 3 weeks to go – I.A.!
irritated asshole -result of a 'bad dung' -no way to take shower or bidet, baby wipes
john wasn't big on deffing at work, as; he'd often get I.A.