Are You Talking To Me?

Can you people tell me more about famous filmy quote 'Are You Talking To Me?'
In what context people use this line?

Thanks
SB

It's from "Taxi Driver" -- www.msu.edu/ user/svoboda1/taxi_driver/sounds.html

In my experience, it's used by most people as a goof. In a humorous fashion.

That's interesting because in my experience it is used as an aggressive challenge: the implication being that if 'you' are talking to 'me' there will be trouble.

DFG

You're both right. The hostility is in inverse proportion to the square of your distance from New York. In Kansas, it;s an amusing film reference. At 125th and Amsterdam Avenue, it's a danger signal.