My laptop shocks me

[Max-Powers]

My laptop is a 1 year old dell Inspiron 1520. It is a little beat up, still works great. But the corners will like shock me if I rub it with sensitive skin like my forearm, wrist, or leg. I even put my lips on it. Doesn't hurt. Less than a 9v battery. Feels like a little needle tapping my skin. At first I thought It was just a little hair being plucked. But it's just weird and annoying in some situations. Doesn't seem to affect the computer. Anyone hear of this happening before? Should I be concerned? I am deployed right now so there isn't much I can do about it.