Fighting anyone for more then one minute and then ending up dead because they earned the kill. Can't tell you how often it has happened, but anytime a kill comes from a fight, not a HO/pick/vulch, is my favorite death.
Some come to mind, the first time I thought I had Grizz, K4 on K4, think, oh yeah, next scissor he is mind. Pull vertical, look out the top of the canopy thinking his airplane would be parallel to mine. All I see is K4 nose.... tower.