After function dandy escaped (3,3)
I believe the answer is:
got off
'escaped' is the definition.
('get off' can be a synonym of 'escape')
'after function dandy' is the wordplay.
'after' means one lot of letters go next to another.
'function' becomes 'go' ('go' can be a synonym of 'function').
'dandy' becomes 'toff' (I've seen this before).
'go' put next to 'toff' is 'GOT OFF'.
(Other definitions for got off that I've seen before include "fell asleep" , "escaped punishment" , "went to sleep" .)