Thonge, thong, fhong, fong????

I have an English background and I always heard this word. I also heard it used in the movie "A Knight's Tale". The red headed man says it when he threatens Chaucer. Basicly he says something along the lines of, you better listen to us or I'll beat you up (fong???)

It's been a while since I've heard it. I've never seen it spelled. Also, with my Grandad's accent, I now realize....did I hear him right?

Anyone have any idea what I am talking about?


I've converted to lurk-ism... hopefully only temporary.