also goal post
(~s)
1.
A ~ is one of the two upright wooden posts that are connected by a crossbar and form the goal in games such as football and rugby.
N-COUNT
2.
If you accuse someone of moving the ~s, you mean that they have changed the rules in a situation or an activity, in order to gain an advantage for themselves and to make things difficult for other people.
They seem to move the goal posts every time I meet the conditions which are required.
PHRASE: V inflects disapproval