Start with a rectangular sheet of paper
Fold it in half lengthwise
Unfold it
Fold the top two corners down to the center crease
Fold the new top edges down to the center crease again
Fold the paper in half along the original center crease
Fold the bottom corners up to form a triangle shape
Fold the triangle flaps inward to lock the shape
Hold the paper by the pointed end
Flick your wrist downward sharply to make it pop