Targets someone who's never drunk in a vehicle (5)
I believe the answer is:
butts
'targets someone' is the definition.
'butts' can be an answer for 'targets' (I've seen this in another clue). I am unsure of the 'someone' bit.
'never drunk in a vehicle' is the wordplay.
'never drunk' becomes 'TT' (short for teetotal).
'in' indicates putting letters inside.
'a vehicle' becomes 'bus' (bus is a kind of vehicle).
'tt' put within 'bus' is 'BUTTS'.
'who's' is the link.
Can you help me to learn more?
(Other definitions for butts that I've seen before include "Large beer casks" , "casks such as the one that did for Clarence?" , "Objects of ridicule" , "Victims" , "Target area" .)