1. Curse at me for no reason.

2. 9:22 AM, USA Eastern time.

3. Auctally on the survival server, In the chat

4. Just me, It was just me and him online.

5. Here

http://i.imgur.com/0BrTYbK.png

Even though he may have said it was a joke, I still find this very rude for someone to just log on and say that

Rude, yes. However, occasional swearing is not against our current rules.

Oh. I still find this offensived because he just logged on and swore at me

Understandable, but the he/she did apologise afterwards. Therefore, I don't find it necessary to give them a warning.