Hook a brother up 

To go out of one's way to help or provide a service to a friend/colleague/acquaintance. Often in exchange for nothing. Another way of describing a favor or act of altruism.

For example:

'I going KFC, what you having for lunch?' 'Got no money, do you want to Hook a brother up?' 'Okay I will HBU and get a bucket.'

Hook a brother up by james hooha June 16, 2012

[Hook] a [brother] up

A request of information/access to something (often illegal) from one homeboy to another.

Homeboy A - "Yo nigga, I got me a fly new hat stand"

Homeboy B - "Yo yo yo my man, Hook a brother up"

[Hook] a [brother] up by LaShaun Jackson1 January 27, 2009