How To: Pull a magic floating ketchup packet in a bottle trick

Try out this super easy and accessible trick with a catchup packet in a bottle. Find one packet of ketchup like the ones at McDonalds and put it in a bottle of water. You need to find a packet without air in it. The ketchup magically rises and falls when you squeeze the bottle. Use this as inspiration for one of your April Fools Day pranks!