The Clemson April Fool Parade (1907)
Students at South Carolina's Clemson Agricultural College (now Clemson University) held a parade on April 1st, which angered the college president, Patrick Hues Mell, since the school was also a military academy and he objected to the sight of the cadets "parading around with their shirttails out in a most unmilitary exhibition for men in uniform." He banned the cadets from repeating April Fool pranks in the future. The next year many of the cadets defied this order, with harsh consequences for them.