The ways a pair of ducks finish up can be just too curious (5)
I believe the answer is:
snoop
'be just too curious' is the definition.
I can't tell whether this defines the answer.
'the ways a pair of ducks finish up' is the wordplay.
'a pair of ducks' means two replacements for 'duck'.
'the ways' becomes 'sn' (I can't justify this - if you can you should believe this answer much more).
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'finish' indicates one should take the final letters.
The final letter of 'up' is 'p'.
'sn'+'o'+'o'+'p'='SNOOP'
'can' acts as a link.
Can you help me to learn more?
(Other definitions for snoop that I've seen before include "Furtively look around" , "Investigate; pry" , "Be nosy" , "-- Dogg, US rapper; spy" , "Informally, pry inquisitively" .)