One day back when I was playing WoW, I was dicking around and made a Mage character. So I used the first spell, Fireball, at a wolf as part of a beginning quest. The connection lagged so epically it froze while I was charging the fireball, and then connection returned to normal and an explosion appeared on the wolf as it instantly died. And I wasn't charging the fireball anymore.
So me and my little bro have an inside joke called "Glitch! Boom!"