A state of extreme perception, reflexes and dexterity. When one triggers or experiences a paragon shift, he or she knows exactly what to do, when to do it, and how to do it. He or she reaches the pinnacle of awesomeness and is, essentially, becomes awesome in every way. Anyone can trigger or experience the paragon shift in any situation. From a Navy SEAL who took out 5 commies with only his bare hands, to that guy sitting on his couch who just went 42-0 with only his XM8 Prototype in Battlefield Bad Company 2.
Matthew: Dude you literally juked their whole team and scored a touchdown.
John: What can I say, I had a paragon shift.