I know exactly how he would feel with that. My mum passed away 4 years ago and I was close to my mum so it's kind of touchy for me (not that I get pissed off with people and say/do something to them, especially if they don't know about it) but it does hit that spot.

But it's good you know where to draw that line on that stuff and sounds like you guys are good together with being able to joke like that to each other - kind of hard to find nowadays I swear.