Some of slang expressions are acceptable and the others are a rude and impolite. Words or phrases may be considered as slang if they fulfill one or more these characteristics (Slang of Duke.http://www.epinions.com):
1. Creative
Slang is created from a new term, so it needs the creativity of the creator. The creator is encouraged to produce new terms, which are imaginative, innovative, productive, even shocking, and amusing. The example of teenagers’ creativity is creating slang terms from the existing words. In this case, teenagers still use the original words, but acquire a new meaning, which is different from its original meaning. Some of them is constructed from the kind of colors, animals, and numbers,
2. Flippant
It means, slang produced has irrelevant meaning with the context. That makes this term considered as a rude, for instance, fucking chicken, bitch, motherfucker, and shit.
1. Creative
Slang is created from a new term, so it needs the creativity of the creator. The creator is encouraged to produce new terms, which are imaginative, innovative, productive, even shocking, and amusing. The example of teenagers’ creativity is creating slang terms from the existing words. In this case, teenagers still use the original words, but acquire a new meaning, which is different from its original meaning. Some of them is constructed from the kind of colors, animals, and numbers,
2. Flippant
It means, slang produced has irrelevant meaning with the context. That makes this term considered as a rude, for instance, fucking chicken, bitch, motherfucker, and shit.