The most common and most likely answer to this crossword clue is the 8 letter word BOLLOCKS
B
O
L
L
O
C
K
S
Buddy explains!
The straight part
We know that "balls" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case balls = bollocks.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 BOLLOCKS mean?
BOLLOCKS noun- The testicles (sometimes used in the singular)
- Nonsense or information deliberately intended to mislead.
- (used as singular) An idiot, an ignorant or disagreeable person.
- A contraction of the dog's bollocks.
- (taboo) To break.
- (taboo) (also bollocks up) To fail (a task); to make a mess of.
- (taboo) An expression of anger, frustration, etc.
- (taboo) An expression of incredulity.
- To reprimand severely and grossly.
- To exhaust, tire out.