Getting ready to leave my place after he came for the usual nightly visit with our 3 yr old (and showing signs of drinking) we started arguing about something (it had been heating up for me b/c he had been snappish and short-tempered during the visit). I tried to stop it and said, pretty calmly I think, that "This isn't a good time to talk about this. You've been drinking and we can talk about it another time."
So he snaps and defensively says something like "I wish you could understand how hard it is for me everyday and today was a really bad day!"
Bad, because the paper work for his DUI hadn't been filed by the police so his court date was bumped. Yep, I am sooooo insensitive to his pain.