Two ladies in our church had just finished evangelism training and were picking out tracts from my store to go hit the streets with. They both loved the Curved Illusion tracts and decided to buy those.
As we were driving to our fishing hole they realized to their horror that they had bought tracts that required them to actually speak to people! Gasp! They're big chickens just like I am, and we had a great laugh at their blunder. I was so encouraged when they used them anyway with great results.
Gospel blunders…making us smile and keeping us humble. ;-)