Fictional lawyer having a drink with mother and child (5,5)
I believe the answer is:
perry mason
'fictional lawyer' is the definition.
(I've seen this in another clue)
'a drink with mother and child' is the wordplay.
'a drink with' becomes 'perry' (I am not sure about this - if you are sure you should believe this answer much more).
'mother' becomes 'ma' (ma can mean mother).
'and' means one lot of letters go next to another.
'child' becomes 'son' (male child).
'perry'+'ma'+'son'='PERRY MASON'
'having' is the link.
Can you help me to learn more?
(Other definitions for perry mason that I've seen before include "TV lawyer" , "Counsel" .)