I first thought I was in trouble when I heard about that:
The stereotype that "Germans have no humor" is a long-standing cultural cliché often associated with British humor or perspectives, rather than a single direct quote from one person.
However, the specific phrase "A German joke is no laughing matter" is often attributed to the American author Mark Twain.
Then I realized that my humor was more of the combat street magic style having had found my Master in Comedy.... here... They cry triggered by even an innocent joke.
I knew I will be able to give it all back. One day!