Hacky sack was a big fad at our school so me and my buddy flet like doing something that anyone would fall for...
One night I went to his house a opened a hole in a knitted hacky sack and emptied it out and put an egg in it and sewed it back up.
At homeroom we went on a concrete and tossed someone my "modified" hacky sack. As he went to kick it we could barely refrain for cracking up. As he kicked it We Laughed for a long long while.