Full cup with water, place paper over top, flip, pull paper out.

To make it more evil, stick their credit card out the side.....

fill the cup, place a thin, flat surface on it such a paper. Hold the the paper on to the cup firmly then quickly flip the cup resulting the paper to be on the bottom with the cup above it; hold the cup pull the paper out quickly and sit back to enjoy....

put aluminum foil on the glass, flip it, carefully pull off the aluminum foil 🤣

Put a thin sheet of something water resistant on top of the cup, then flip it over carefully. Take out the sheet and you're done!

Me and my friend did this to her older sister whose chore was to clean the counter she was mad. She chased us around the house!😂

fill a cup with water and cover it with a piece or plastic, then flip the cup upside down on a counter and slowly pull the plastic out from under the cup. :) no mess!

it is easy if u put a piece of paper under the cup then turn it upside down and put it on counter bt u have to fold the paper. i did it

Here a easy instruction: https://www.youtube.com/watch?v=mdKspeh87YE

put a little card over their drink, flip it upside down, and carefully remove the card

u need to sell ur soul

Jello duh!!

thats what I thought too

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I think freeze it, then heat it so it becomes liquid.

get a cup of water, fill it up, place paper or something on top, flip, put on table, slide out paper. Ps just get a bucket to fix it

you put paper and then flip the glass quickly then gently pull the paper

fill half cup water with one ice cube then put a thin peace of card bored on top and then flip the cup up side down and then gently remove the card bored and little might leak.

ice cups

I dont know if being captain obvious, but fill with water, put a paper over it, turn downside, put where you want, remove paper... must be a smooth as granite

use a thin glass to block the water, make the cup upsidedow and quick remove it

The cups are upside down.

Ice will do

ice, i think

How closely are your parents related?

I think i know: 1. pour water into glass 2. place book/something flat on top of glass 3. turn glass over with (book) covering top 4. slide glass onto table? Idk if this will work. i'll probably try it out for april fool's tomorrow