This is NOT fake. To make someone faint, first have them squat down and breathe in deeply for about 10 seconds. Then, have them stand up straight against a wall and hold their breath. Get someone else to push hard against their chest. The person standing should then lose concsiousness for a few seconds! WARNING : This is dangerous and I am not responsible for any injuries/deaths that may occur. I do NOT encourage you to try this. Use this as inspiration for one of your April Fools Day pranks!