There is a Youtube channel called JustForLaughsTV which has over 2000 funny videos. They are hidden camera style and usually only have music and sound effects. It's amazing how they can make so many different videos without even having to explain it with words. I have only just scratched the surface of this channel, but already I've seen tons of hilarious videos. Here are some of my favorites so far.
Little Kid Buys Drinks for Older Women
Bystanders Become Author at Book Signing
There are a lot more of these videos and they can be very addictive. They are great if you have some free time and are in the mood for a quick laugh.