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.
Also known as a triple f, this insult has been around for generations in ... a family. Used mostly as an insult to those who resemble perverted ass holes. You know who I'm talking about...Tom.