Rule 1: Content
Do not post anything that is not work safe, blood is fine but gross imaginary will not be tolerated. Nudity-involving artwork is to be kept tasteful, so no pornography. If you post pornographic images, links to porn videos, you will be banned. If you post suggestive material you might be asked to remove the drawing/link, or it will be removed and you will be PM'd about it being removed or be banned.

Your content was suggestive.

Rule 2: Artwork and Critique
Please respect others work and give polite critique, always. Even if you feel that being blunt and to the point is necessary, try to soften the blow of how horrible something is to someone. No pornographic artwork is allowed, adult content, nor suggestive material. You will be banned for posting such content.

Since it was suggestive, you were banned.

And again, in rule 1 "gross imaginary".
That drawing was gross.