We call him Doughboy because he'll do anything for a buck.
4 seconds sound clip from the Taxi Driver (1976) movie soundboard.
You can hear this line at 00:16:12 in the Blu-ray version of the movie.
Quote context
[...]
- Then she gave me a $200 tip and her phone number in Acapulco.
- Travis, you know Doughboy, Charlie T.?
- Hey, Travis. Got change for a nickel?
- We call him Doughboy because he'll do anything for a buck.
- So, uh... So how's it hanging?
- Well, I turn on the radio. Some fleet driver from Bell just got all cut up.
- Stickup?
- No, he got cut up by some crazy fucker. Cut half his ear off.
- Where?
[...]