I placed a spool of white thread in an inside suit coat pocket and threaded it through my coat lapel to make it look like lint.

Friends who saw it pulled on it. It kept coming out until they realized it was an April Fools' joke.

Puppy Switcheroo
Submitted by Sue I.

We had an adult yellow lab. After the kids went to bed, we borrowed the neighbors' yellow lab puppy and gave them our dog for the day.

When the kids woke up, they couldn't figure out why their dog had shrunk.

Our neighbors' kids were also surprised at how much their puppy had grown overnight.