The most common and most likely answer to this crossword clue is the 4 letter word SIMP
S
I
M
P
Buddy explains!

The straight part
We know that "cokes (as of old)" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cokes (as of old) = simp.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.
What does SIMP mean?
SIMP noun- A simple person lacking common sense; a fool or simpleton.
- To melancholically reminisce; to recall once fond memories now tinged with sadness, especially regarding a former lover.
- A man who foolishly overvalues and defers to a woman, putting her on a pedestal.
- (by extension) Someone who foolishly overvalues someone else and defers to them, putting them on a pedestal.
- (of a man) To be especially deferential and emotionally vulnerable with a woman, often with the intent of receiving sexual gratification.
- (by extension) To obsequiously praise or admire.
- Made more simple; having its complexity reduced.
- Relating to simplified Chinese.