My brother, the German economy and pushing the 'self-destruct' button

So anyway I promised to talk about how my brother's relentless desire for conversation can lead him down some embarassing roads. The 'German economy' incident is one I like in particular especially because it's still as funny as it was when it first happened.
It was during my first year here and me and Rama were standing in the doorway when this German girl comes along and just kind of stands near us. I'd seen her around and only knew her as possibly the most quiet person in the entire hall- I had hardly ever heard her speak. Anyway she just stands there in the doorway with us in total silence and I can already see my brother getting impatient and desperate to attack the silence. So after a few minutes, he cant take it anymore and starts talking. I cant remember everything he said but he eventually wound up giving an in-depth discussion of the German economy among other things while the girl just kind of smiled and nodded. It was going fairly well until he began to diss people who stereotype Nationalities. He blasted people who do that with Germany- 'the land of Hitler' etc. So guess what he does after taking so eloquently about the dangers of stereotyping? You guessed it- he fell right into that trap straight away. He started talking about German women and in the process he began to discuss the issue of the female East German athletes who were heavily doped during the seventies and eighties for the Olympics and started making jokes about "Heidi Shmunz standing on the starting line and scratching her balls" (the drug regimen made them very masculine as you can imagine) It was hilarious. I was laughing till tears were rolling down. It was only later that he realized exactly what he had done and he was horrified. I dont think the girl took it badly- I do remember she was smiling- but for him to wander straight into the 'female German athletes who virtually turned into men' stereotype was a magnificent faux pas. I tormented him about it for months afterwards. Everytime there was a silence and I felt he was sufficiently at ease, I would say 'So yeah, the German economy...' and he'd scream at me "You dickhead!' and occasionaly throw something ( I learned to be very quick). He asked me later why I didnt stop him. I told him anyone who would ruin such a moment of pure comedy gold would have to be insane. I guess you just had to be there, but the whole thing-even before the athletes made an appearance- was absolutely funny. My brother has rarely since equalled that night of rambling. It was possibly the most epic 'foot in mouth' incident I have ever been a witness to.