The most common and most likely answer to this crossword clue is the 4 plus 3 plus 3 plus 2 plus 5 plus 3 plus 6 letter word DOWN AND OUT IN PARIS AND LONDON
I've seen this crossword clue in The Guardian
D
O
W
N
A
N
D
O
U
T
I
N
P
A
R
I
S
A
N
D
L
O
N
D
O
N
Buddy explains!
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.