The smallest paper airplane ever constructed was approximately the size of the period at the end of this sentence. When launched, it could fly the equivalent of 1045 feet, as calculated by the International Paper Airplane Committee. iRL, the distance was 3/8".
The International Paper AIrplane Committee (IPAC) was never able to settle on definitive criteria for what constituted a paper airplane. However, some of the engineers whose paper aiplanes were rejected formed the Flying Spitball Society of Blawnox, PA.
Abraham Lincoln was kicked out of 4th grade for shooting spitballs at the teacher.
Fun fact! Spitballs in the 1800s were made of lead. Boys would chew up bits of lead and ptooey! spit out tiny pellets.
Which is how metal fillings for teeth came to be.