Random Asian Guy/Girl. Someone who is dead silent, and, at best, speaks when spoken to.

A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.

A woman.
Evolved from "on the rag" meaning having one's period, to "rag" meaning a woman who is having her period, to "rag" just meaning any woman in general.

DISCLAIMER: Women tend to find this term a bit offensive. Calling a woman this may slightly decrease your chances of getting laid.

Random Asian Girl.

1.V. to give someone a hard time
see also: giving the business, giving shit, f*ckin wit ya
2.N. Womens' period
see also: exscuse for immature women to act rude

whereas the "rag" originally referred to the maxi pad used when a woman is on her period, "on the rag" is now used generally to mean having/being on your period, whether or not one uses a maxi pad.

Not caring, Without thought or emotion