tact

tact is something not a lot of people have and   a lot of people need. often when i am in a social situation  non-whisperers  ask me who so and so is when so and so is standing within earshot.  though i usually do know who so and so is i am not very inclined to want to share my information when so and so is standing right within earshot. i always wish that i  could simulate an electric shock to whoever is so tactless .  even though i am not the one asking the tactless question i feel embarrassed when someone asks this of me in such a tact-free fashion.