I just recently discovered that there is a national holiday named after Atheism. April FOOLS day. Like this story in the name of Jesus.
Take a squirt gun into the rest room stall next to someone and shoot little drops over the wall every couple of seconds while pretending to pee.
You are so old, you sat next to Jesus in school.
Hide an alarm clock in someone's bedroom and set it for 3:00 a.m.
Paint a bar of soap completely with clear nail polish so it won't suds up.
Q: Who was the greatest comedian in the Bible? A: Samson. He brought the house down.
Put a "Please Use Other Door" sign on the entrance to your office building if it only has one entrance.
Jesus walks into an inn and hands the innkeeper 3 nails and says "Can you put me up for the night?"
My girlfriend admitted to me she was once a Christian, so I immediately broke up with her. It may come across as judgmental, but really, I've only ever known and loved her as Christine.
Hide all of the desktop icons on someone's computer and replace the monitor's wallpaper with a screen-shot of their desktop.