German commercial concerning pleasure-seeker (8)
I believe the answer is:
gadabout
'pleasure-seeker' is the definition.
(gadabout can mean a pleasure-seeker)
'german commercial concerning' is the wordplay.
'german' becomes 'g' (abbreviation).
'commercial' becomes 'ad' (abbreviation for advertisement).
'concerning' becomes 'about' (about can mean concerning or relating to).
'g'+'ad'+'about'='GADABOUT'
(Other definitions for gadabout that I've seen before include "Pleasure-seeker" , "Vagrant" , "Person who wanders aimlessly in search of pleasure" , "Rover" , "restless type" .)