The most common and most likely answer to this crossword clue is the 9 plus 2 plus 2 plus 2 letter word SOMETHING TO GO ON
I've seen this crossword clue in The Guardian
S
O
M
E
T
H
I
N
G
T
O
G
O
O
N
More clues leading to the result SOMETHING TO GO ON
Buddy explains!
The straight part
We know that "Potty/clue" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case potty/clue = something to go on.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.