a sort of joke about noun declensions in German
The word decline has two meanings in English. If you refuse an offer, you decline it. And (2) if you change an adjective, verb, adverb or noun according to its use in a sentence, you decline it. A friend once told me that he would rather decline a drink than a German noun.
I think that's a joke Mark Twain came up with in his famous piece regarding the German language.
"I heard a Californian student in Heidelberg say, in one of his calmest moods, that he would rather decline two drinks than one German adjective." from The Awful German Language ( https://www.cs.utah.edu/~gback/awfgrmlg.html )
Great reply. Lots of info. btw satishvc, your Amazon address for your book doesn't work.
Duo seems to be remodeling the profile pages. But the link there is still correct - https://www.amazon.com/dp/B01CEK3TQ0 . You can also search for the book "From America...nach Deutschland: An English-German Summer Adventure" by Venson. Let me know if you still have trouble finding it.