The most common and most likely answer to this crossword clue is the 3 plus 4 plus 3 plus 10 letter word MAD DOGS AND ENGLISHMEN
I've seen this crossword clue in The Times
M
A
D
D
O
G
S
A
N
D
E
N
G
L
I
S
H
M
E
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.