i don't know if it's unique design but i have the idea for it during a db lesson @ university.
Step 1: Step One
->fold it in the half then unfold it so you have a paper like the pic
->fold the top right and left corner to the center (just like the 2nd picture)
Step 2: Step Two
->fold the "nose" of the plane as displayed @ the 3rd picture ( notice the line )
Step 3: Step Three
->fold again in the half following the crease of step 1
Step 4: Last Step
notice the point you must hold the plane (on 2nd photo)
Step 5: ..
have fun and try do not hit your teachers (just hit em when they can't see you) with the airplanes