Ad lib with funny guy swallowing gin cocktail (4,2)
I believe the answer is:
wing it
'ad lib' is the definition.
(thesaurus)
'with funny guy swallowing gin cocktail' is the wordplay.
I cannot quite understand how this works, but
'with' could be 'w' (abbreviation) and 'w' is located in the answer.
an anagram of 'gin' is 'ing' which is within the answer.
The remaining letters 'it' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for wing it that I've seen before include "Perform without any preparation" , "Improvise" .)