1. Any fucktard who can't rub two brain cells together to meaningfully contribute to this fine but under-appreciated form of American culture and instead uses Urban Dictionary merely as a message board to voice criticism with a definition or someone else's superior command of the English language, or to make personal attacks on those who do contribute glibly and often.
2. An entity or person needing a cooler or just plain better handle.
1. Dude, I thought that "prom night" definition was fucking hilarious... and like most successful comedy bits, very true. Who's the uptight "Who Banger" trying to trash it? What an ignorant douche-bag!
2. Who the fuck would call itself "Who Banger?" Oh, of course, a Who Banger.
Someone who hits the keyboard to have it make loud noises in order to make it seem like they are working hard, often hitting random keys sporadically to imitate someone who is hard at work.
Sol: Wow, Manny is working hard typing that fast.
Derrick: Manny is not working hard, he is just a professinal keyboard banger.