what offends me....
the "n" word (no, i'm not black. i just believe that is rude and disrespectful and should not be used by anyone. not to mention, my grandpa is one of the most racist people i've ever met.)
people using the words "gay" and "jewish" to mean "stupid"
people calling everyone they see "posers"
people judging others before meeting them
people forcing their religion on others (send me a pm if you want to hear interesting ways to scare off Jehovah's Witnesses)
people telling others they can't wear certain clothes or say certain things because they're "not goth" (or whatever the clothes or phrases are)
general stupidity
people who use improper grammar or typing unitelligably because it's "cool"
people who say they are gay/lesbian/bi becuase it's "cool"
people who cut themselves because it's "cool"
people who keep sending you chain letters after you ask them not to 50 times (this annoys me the most. grrrrr.)
...i think you get the idea.