An experiment which is expected to fail disastrously.
The original trucksperiment involved jumping in the back of a truck and rolling it down a steep hill, but the word has since come to reference any such experiment that is expected to go badly.
"Lets see if my snake gets along with your pet rabbit, it'll be a trucksperiment."
"I'm doing a trucksperiment to see how drunk I can get off of this rubbing alcohol."
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.