Googly say: it's bowled everyone! (4)
I believe the answer is:
ball
'googly say' is the definition.
(googly is a type of cricket delivery)
'bowled everyone' is the wordplay.
'bowled' becomes 'b' (cricket abbreviation).
'everyone' becomes 'all' (all people).
'b'+'all'='BALL'
'it's' is the link.
(Other definitions for ball that I've seen before include "Squash, say" , "One spotted in competition" , "Round object - dance" , "Formal dance gathering" , "Social function for dancing" .)