Why is the term "homo" offensive to homosexual people even though it is so

much more precise than "gay?"? When you say gay you could mean so many things like lame, weird, girly, happy, not necessarily homosexual.

But when you say something like, "I am tired of all these homos in my dorm", people know exactly what you are talking about.

So why do homosexuals have a problem with being called homos. Its just a shorter version of the medical term.

Your opinions, please!