Let's put it this way, my dad once threw one of those Numi tea bags at the back of my head, I whipped around in time to catch it. (I have no idea how I knew it was coming, he didn't say anything, and I didn't hear it. :?) He also tried throwing a banana peel at my head from a second floor, which I caught.
Swimming when a dodgeball is thrown at me? Nope. It went flying.
Anything starts falling around me? Nope, can't let that happen.
Boxer's penny trick? Four rows of five dimes lined up my elbow is currently my best consistent record.
As for mental reflexes, I have more then once thought of a witty comeback. . .
Jess, who was throwing a knife at you? :t
You should tell me their name, I could teach them how to properly throw one. . . .