Trying to leave Germany? I don't think so

For any of you planning to ever travel out of Germany - be sure to have your passport stamped at whatever your entry point is in to the UK. My brother had a nice long discussion with the passport agent as we were trying to leave Stuttgart. The agent was asking how he got in to Germany without a stamp. It took a lot of back and forth, a lot of german & english mixing, and some gestures before he was finally let through. My dad had a couple extra questions too. By the time I got there apparently they didn't care. I was just waved through. Maybe I look more trustworthy.