raunchy

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Obscene, lewd, or vulgar.
• adjective Grimy; unkempt.
• adjective Uninhibited. Used of sex.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Very low class; inferior; inadequate.
• adjective With dishonorable, base and vulgar expression.
• adjective Having socially unacceptable sexual behavior.
• adjective Sexually seductive.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective thickly covered with ingrained dirt or soot
• adjective earthy and sexually explicit
• adjective suggestive of or tending to moral looseness