What is a doorknob?
According to the Wordnet dictionary:
doorknob
n : a knob used to release the catch when opening a door (often called `doorhandle’ in Great Britain) [syn: doorhandle]
I was quite confused when my friend told me that I was a doorknob. So, knowing that it was some term used to describe people, and not a doorhandle, I looked up the urban dictionary:
a term for an easy girl who sleeps around. called a door knob because everyone gets a turn.
This obviously didn’t apply to me either. Then, my friend further confused me by saying that I’m a chatty doorknob, as opposed to different kinds of doorknobs. I would like to figure out what it all means because my friend says that it is exactly the position that I want to be in. A doorknob with a personality.
What is a doorknob?
Sybreon Ones Nought 
There’s a sleepy doorknob in Alice in Wonderland. I don’t think he can be classified as chatty, but he is obviously an intellectual (i.e. he is incomprehensible). He also states the obvious – ‘read the directions and directly you will be directed in the right direction.’
Hmm.. That doesn’t help much. What’s a doorknob?
well… apparently in rhyming slang, ‘door-knob’ was slang for a shilling (knob–> bob, bob is slang for a dollar or a shilling) but that’s very very out of date.
Otherwise, people say ‘dead as a door-knob’ but I doubt your friend means that either.
what’s your friend’s nationality and first language?
It’s our friendly neighbourhood lawyer-drummer.