Invisible Rope- This one is pretty dumb but i found it quite amusing. Have two people on each side of a road at a stop sign. Now when a car comes act like your playing tug a war with each other with a invisble rope. People will usually not speed off and stop for awhile or ask you what you are doing and be stumped.

Stink Bombs - Go buy some stink bombs that come in a glass little bottle. Go into a store and drop one on the floor and step on it and then walk away and watch the people empty the area.

Massive Dump - Go into the bathroom and go into a stall. wait for someone to come in and start groaning and screaming.. I was pretending to wash my hands while my friend did this it was really funny.

Slip and fall - walk into a store and pretend to bust your butt on the floor in front of people see how many come running over to help you and limp away.

Cup of water - Go get a cup of water from a fast food place or some place. Now this is kind of mean.. but walk by someone and fake trip and accidently slash water all over them.

Deaf? - Go up to a employee at a store and ask him where the restroom is when he tells you yell really loud " no? where is the restroom".. this was really funny.

Random Carts - Go into a store and put random stuff into peoples carts or take something out and walk away. ( note: dont mess with people that you cant handle)

Moving Dollar - This is a fun prank. Go into a store and tie a peice of string to a dollar bill and place it on the floor somewhere visble (middle of the isle) next walk to a place where u can act like your looking at something but really pay attention to your dollar. when someone sees it and bends over to grab it yank it.

The Quater - Find a busy place ex: Walmart, target. Glue a quater or even half dollar to the ground with super glue. Next watch the people try to pick it up.

Push and Pull Signs - Print signs that say PUSH and PULL on the other paper. Next pust these signs on doors that are the opposite thing to do. Ex: The door you choose is a push door put the PULL sign on it with tape or whatever.