This the the prank of all pranks! Get ready to watch your victim struggle to get his or her possessions out from inside of an upside down, filled water glass. Let's just say your victim may get a little wet! XD

Step 1: Gather Your Materials

For this funny prank you will need:
- A flat sheet (like a Manila folder or plastic sheet)
- Water
- A container (A cup will do)
Optional
- A ZipLoc
- Your victim's keys or phone

Step 2: Fill the Cup With Water

Fill the cup up with water or any liquid really until it gets all the way to the top.

Step 3: Optional to Make the Prank Even More Funny and Effective

Place your victim's keys or, if your container is large enough, their phone into a ZipLoc bag, to make sure it doesn't get wet, and seal it super tight so no water gets in. Make sure the bag doesn't have air in it so it fits in better. Also make sure their phone is on loud so if they call it, they find it in the water. Then, drop it into the cup of water! MUAHAHAHAA!!!

Step 4: Flipping the Cup

Ok, don't mess this part up, I'm serious. So just follow the pictures but make sure the Manila folder keeps the cup sealed by having it flat on it. Also, do the flip over a sink just in case it spills. When you're about to set it on the table, try to get as close as you can to the table so it doesn't slam and spill everywhere. When you get everything on the table or counter, carefully pull the folder horizontally straight out so not all the water comes out and the cup doesn't fall over. Keep a soft pressure on the cup so it doesn't tip during the removal of the folder. I'm pretty sure some water will spill during this process so keep a towel or cloth handy.
I'm doing this step without water so I can take pictures without having it spill out.

Step 5: Admire Your Work and Wait for Your Victim

This is the best part of the prank. If you placed your victim's phone into the cup, call it to get their attention. They are gonna be in for a wet surprise!!!

Please vote for my instructable in the April fools contest! Thanks!