There are two types of paper poppers ("Classic" or "blocky and easy")
Original (Requires extra force to pop loud):
Make sure your paper is in the position where the long part is part of its height.
fold your paper in half widthwise
unfold step 1
Then FOld the top corners into the middle crease, then fold the bottom ones the same way (Flip your paper in half if you need to.)
Make sure your paper is still in the position where the long part is part of its height, then fold it in half lengthwise.
rotate the triangle so now the longer spot is part of its length and the spot where it is shorter than the other parallel side is facing down
fold it in half lengthwise
unfold step 6 and fold the corners to the middle crease, there should be a spot where the corner goes away from the triangle
refold step 6
How to pop:
hold on to the part that sticks out from the triangle (DO not hold anywhere else)
throw it like a ball but don't let go of it
blocky and easy (does not require much force to get a pop out of it):
Make sure your paper is in the position where the long part is part of its length.
fold the paper in half heightwise
unfold step 1
fold the paper just on top of the crease from step 1
fold the paper just about where step 3 ends
fold step four down (From the bottom of it) 2 times
fold it in half away from you
How to pop:
take step 5 and slide It until it is sticking out of the square
hold it op the flaps and throw it like a ball but don't let go of it