This is a piece of joke cut of from a magazine many many years ago. My mom kept a collection of these jokes so nicely in her cupboard. If you look at the actual piece which has its sides torn and paper turned brown, you would be able to tell that it's a really old collection.
After my mom showed me this, I scanned through it but I didn't laugh immediately. It was only after she laughed at it that I started laughing too. Her laughter made me laugh too. XD