when you look at a girl especially in a nightclub or in general, and in your mind she is outright gorgeous to you, in a guys book from 1-10 she is a 8, 9, or 10

The state of mind you enter when you really like a girl but she doesn't reciprocate your feelings, or when you really like a girl but know nothing will come of it. This is a very dark place

A noun used to describe the utter decay of the mental state, usually due to alcohol or marihuana. One who has hit "the abyss" usually ends up being ill, depressed, fubar, or otherwise in a "deep dark place"

Abyss is one of the few English words that derive from Sumerian, the world's first written language, which evolved some 5000 years ago in the lower Tigris and Euphrates Valley of what is now called Iraq. The word came into English in the late 14th century from the latin word abyssus, meaning "bottomless, the deep," but has been traced ultimately to the primordial sea that the Sumerians called the Abuzu.

the low point of something, when things can't get any worse

also use "abysmal" as an adjective in the same context

1) A bottomless dark hole into hell

2) A character on he ps2, gc, xbox game Soul Calibur 3

A dark setting where males look for females on a similar level of intoxication as them. There is often music playing. Upon entering the abyss one might start to grind with a random girl and then proceed to hook up with her. Ideally no names or words would be exchanged. It is very easy to get with many girls of low quality in one night. Due to the darkness and drunken state it is hard to judge the attractiveness of the females which can lead to mistakes. The abyss defines the saying quantity over quality.

P.S. Watch out for monsters.