Guys in a cage? (4)
I believe the answer is:
ribs
This clue is a double definition.
'guys' is the first definition.
(I know this)
'cage?' is the second definition.
(I've seen this before)
'in a' is the link.
(Other definitions for ribs that I've seen before include "Teases (informal)" , "Arched bones in the upper body" , "cage" , "Bones in chest, may be floating" , "Curved bones around the chest" .)