- Setup. Plan your prank a few weeks beforehand, rehearse it, prepare whatever you need to do to make sure it goes without a hitch. Speaking of hitched, one of teachers and another teacher schemed to convince their students they were engaged. The thing was, though, he wasn't prepared, so the joke had less impact (plus no one believed him).
3. Duration. Pranks should end on April 1st, but to string out your victims out a little more, end it the day after. Don't do this with very crucial matters however! Don't keep up a joke about sensitive matters after April 1.
And if the prank-ees can't figure out that you are joking, tell them. Take the engagement example: That teacher's students still think she's getting married!