April fool's day is an opportunity for playing jokes or tricks on one another. The challenge is to carry out a trick that is believable, if only for a little while. Tricks are most successful if played earlier in the day before a person is wise to what is going on. Younger children are also more gullible. Any tricks or jokes must be harmless and in good taste for the unsuspecting "victim". Jokes should not hurt anyone's feelings. To remember this day wear a wristband with the message "Happy April fool's day".