That's obviously a very tragic outcome to what someone thought was just a joke.....I don't think any of us want to think about the possibilities we have gambled with during our youth & some of the seemingly "harmless" decisions we have made.Understand that it wasn't you and your friends in this instance but wanted to share another side of a similar story. Apparently this was a popular entertainment going a ways back, not sure what time frame your fun was but I know of it occurring in the mid 60's in southeastern Michigan as well.
Teenage girl was driving when a four guys thought it was funny to throw a scarecrow dressed as a person in front of her car from the deep side ditches of a country road on a Halloween night. She lost control and ended up in said ditch with a broken spine and another year of rehabilitation to learn to walk again. She ended up with a normal life but has had constant pain management. She also does not have any ill will towards those kids that were just having fun, but would rather the whole thing hadn't happened the way it did.