An asshole who keeps pounding you with useless bullshit. The type of person that is a pest. Societies ingrown toe nail. The idiot you meet at work, on the bus, in line at the supermarket who decides that you need to know everything about them even when you have no desire to.
"That jerk hammer would not shut the fuck up! I didn't even know him and that jerk hammer kept yapping about his sick mother and his noisy neighbors."