This term reflects the fact (for some) that
functioning (in whatever capacity) can be
severely limited on this day because of
its historic role as a down-easy day.
The term is not restricted to Sundays. It is
a cognate of the verb 'to sunday', meaning
'to underdo', 'to function at a low level'.
Man, did you catch DeeCee's slack getback.
He really sundayed it. Wait until tomorrow.
church hurt is where you experience a degree of distance, pain, or judgement from your church community. Essentially, you are just unable to “find your place”. This is prevalent in the Christian community, but can be extended to other religions.
Now that I am an adult I am beginning to heal from the church hurt that was inflicted on me as a child.