Probably not exactly what you are looking for, but these are my personal go to examples for hilarious laws in good ol' Schermany...
Per law, it's forbidden to detonate a nuclear weapon. It's at least 5 years in Prison.
According to state law in Hesse, burglars could still be sentenced to death until 2018, but since this was already prohibited by federal law, the law was no longer applied for a long time. It has since been abolished, but it's still funny.
Driving blind is forbidden.
You're allowed to drive naked - getting out of the car however requires you to be clothed.
If you fall asleep at work and injure yourself as a result, for example because you fell off a chair, it's considered to be an accident at work and the insurance is liable.
In North Rhine-Westphalia, the following applies: If a civil servant dies while travelling on business, the business trip is deemed to have ended.