Ever seen the "Jackass" or "Impractical Jokers" and wanted to try something like that? Well here are some ideas on what funny, ridiculous things you can do either in your spare time being a jerk, or making a little documentary with your friends to later laugh at. I think breaking the social norms once in a while, and seeing the shocked reactions of unsuspecting people is very exciting, and pushes your own boundaries. So go be mischevious!
Go to McDonalds and ask for fries without the potatoes. May be the employees will also have a sense a humor...
Go to a horror movie and when everyone's quiet scream as loud as you can...bound to get some funny reactions!