But my point with my friend was that everyone has words they dislike, if I worried I was going to offend someone everytime I opened my mouth I'd never speak! I'm clearly not alone here, and TBH, people can think what they want about me. I work with several people who think I'm vulgar for having tattoos, I have twelve piercings in my ears and my nose is pierced. I used to dye my hair various bright colours (it's currently a chesnutty red, the most sensible I've been in years) Already I've offended about half the demographic just by leaving the house. My use of one word over another does not make one blind bit of difference IMO.
Anyone who gets offended by my choice of swearwords (I don't swear like a trooper btw, but I do swear when, for example, I stab myself with a screwdriver at work) is probably going to be offended by lots of other things I do in my daily life so I don't concern myself. What would be the point?
As an aside. Where I grew up Twat'ead was a common insult, no worse than fanny, fud or knob, but if I lived where my uncle grew up, in the North of England, I'm pretty sure I'd have been slapped for it.