Chronic indigestion after scoffing two pizzas and a sh*t load of sweets and stuff down during an all-night MK (SNES) session. Thought I was dying it hurt so much and they had to give me a morphine injection at the hospital to ease it the agony I was in!! LOL.
Oh, and I tore my medial ligament playing footy (round ball not AFL), not horrific pain but it still troubles me these days when I play, 10 years later!!!