it's the double-sided flip plane. If you throw it very softly, it should go forward about 2" and land upside down. It's not the best flyer though.
Step 1: Make a Rectangle
get a piece of paper then fold it in half, aka.hot dog fold, then unfold.
Step 2: Corners in and Fold Back
fold all of the corners(tips) of the paper toward the line of the rectangle you just made(middle) then fold them back as shown in the pictures below.
Step 3: Yay...you're Done
fole the top parts of the wings down a bit further than the bottom of the plane, and do the same with the other side.OPTIONAL:fold the flat end on the end of the wings in a little bit and you're done.