Frickers Nickers is just slang for f**k. Fricker is like fudge it means f**k. Nickers are underwear, however its not slang, but it rhymes with Fricker so it went together. Its used when your mad at people or just messing with them.
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