The word is a hybrid of the expressions "shit!" and "dayummm (as in damn)!". When used it means that the incident or anything that is being described is cringingly bad and amazing at the same time. Although the 2 words from which it originates is part of the american lingo, shiyum is popularly used in the medical colleges in south india.
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.