Diver coming out with pants just too short (6)
I believe the answer is:
puffin
'diver' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for puffin that I've seen before include "Large-beaked sea bird" , "Species of auk" , "Seabird with parrot-like beak" , "Diving bird" , "diver" .)