They want to know if music is his only source of income.

Wordplay using hangers/coat hooks to describe how Lu chills with gangbangers.

Coke is slang for cocaine a drug. Lu hangs with people who push, or sell, the drug.
Tyrese did commercials for Coca Cola, also called Coke. Both Lu’s friend and Tyrese pushed Coke, albeit they were two different products.

Trees, more specifically the wood from them, is turned into trees. More information on the proceess could be found here.

A reference to the suicide jumper line before. The lyrics are still falling from his brain.

Los' boys are in the kitchen cooking up crack to sell.

Los cools off the girl’s vagina and then proceeds to make it overheat again.

Los starts a car metaphor using a girl’s vagina. He’s saying that he’ll fuck her so good that her vagina will overheat, causing her to need antifreeze.

Antifreeze, also called coolant, is a colored fluid (usually green or red) found in a car’s radiator. Antifreeze serves a few purposes, the most important and known is keeping the water in you radiator and engine from freezing in cold temperatures.

http://contentinfo.autozone.com/znetcs/product-info/en/US/owi/PRA053/image/2/

Continuing the car metaphor, Los' takes a break and then proceeds to fix the girl’s friends vagina.

Los' wrist is so icy that it looks like he’s throwing snowballs when he fist pumps.