Is everyone splitting a last resort? (3,5)
I believe the answer is:
pis aller
'last resort?' is the definition.
(I've seen this before)
'is everyone splitting a' is the wordplay.
'everyone' becomes 'all' (I've seen this before).
'splitting' is an insertion indicator.
'a' becomes 'per'.
'is'+'all'='isall'
'isall' placed into 'per' is 'PIS ALLER'.
(Other definitions for pis aller that I've seen before include "last shift" , "last resort" .)