Anything salvaged from the trash.
Your trash is my urban treasure!

Derogatory. Someone who suffers from Down's Syndrome (trisomy 21). Derived from contraction of a now unused description: "Mongoloid features" referring to the bridgeless nose and epicanthic folds of certain far-eastern races.

In skateboarding, pushing the skateboard with your front foot. If you're normal, you use your left foot, and vice versa for goofy.

Mongo is a skateboard pushing style. Mainly used by tools who can't figure out how to skateboard. You push with your front foot instead of your back foot.

A handicapped or mentally retarded person.

meaning a lot, a bunch, very, mega and such, large.

In the construction industry, scrap metal (usually copper) sold by workers for cash and t-shirts.

A character from the movie. Blazing Saddles.