Cox wobbling a bit? (3,4,3,5)
I believe the answer is:
one over the eight
This clue is a double definition.
'cox' is the first definition.
(I've seen this before)
'wobbling a bit?' is the second definition.
('one over the eight' means slightly drunk)
(Other definitions for one over the eight that I've seen before include "having had too much to drink?" , "Boss of Boat Race crew possibly" , "drunk?" , "Cox" , "individual in charge of rowers?" .)