When we picked them up from the airport and were driving past the church the Pastor was like "what's that? Pull in so I can see..." and his wife was like "OH MY HEAVENS WHAT HAPPENED!!?" and I just lost it in the back seat when the headlights hit the chalk outline and his daughter gasped.
My sister and I hold the title in our church for best practical jokers.
When the Pastor turned 50 my sis and I almost got locked up for trespassing in his yard at midnight putting a gazillion little signs up on the lawn.