Someone who enjoys being overtly rude or provocative, deliberately obstreperous to friends, a wind-up merchant. In the pursuance of a particular response, primarily anything with cunt in it.
A group of were chatting when Dan joined them, he was cuntlike from the off. Although the girls were reluctant, he was persistent and duly rewarded with a "Fuck off you cunt".
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi