The phrase "that's a gyp" is incredibly common, and I imagine that you yourself say it, despite it being quite derogatory towards the Romani people known as gypsies. At the very least, its use came into common usage the same way as saying "that's gay," but after a long period became so filtered that its original meaning is completely separate from the demographic it referred to.Gorobrin said:Just noticed a little argument that's been going on here and thought i would throw something out there. Saying something like "that's gay" to mean bad did originally come from people who are homophobic and I'm betting a lot of people are offended by it. it's not that hard to say "that suck's" or "that's bad" but for a lot of people it is just a bit of a habit they got into, But that doesn't change the fact that LGBT people have every right to be offended. just how i feel though.
So, yes, originally the derogatory "that's gay" was used as anti-gay rhetoric, just like "that's a gyp" was used to equate gypsies with untrustworthy business practices. However, complaining about its new incredibly common usage is only going to cause more problems. It makes you seem like you're claiming to own a word, not understanding that language evolves incredibly quickly.
Hell, look at the word fag. From a bundle of sticks to an old person (referring to an old person that was a burden on everyone else) to an old woman...that it can be used to refer to gays now is just coincidence, or at least not the fault of the vast majority of people that use the word.
Regarding the "right" to be offended, I would say that everyone has a right to be offended about anything, but being offended by something doesn't inherently make that something incorrect. Especially since 99% of the time, the phrase "that's gay" has nothing to do with homosexuality, perhaps it's time to just let that word go and not make it mean something that it really doesn't? (Alternately, what's wrong with sharing meanings?)