What does “my other car is a cdr” mean?

Question

Can anyone well versed in lisp explain this joke to me? I\'ve done some reading on functional programming languages and know that CAR/CDR mean Contents of Address/Decrement Reg

Answer 1

//Coming from Scheme
Scheme has very few data structures, one of them is a tuple: '(first . second). In this case, car is the first element, and cdr is the second. This construct can be extended to create lists, trees, and other structures.
The joke isn't very funny.