Some guys on roblox said i was a oder?

They said i looked like a oder so they started making fun of me
what did i do to them

I'm very sorry they did that to you. You should report and ignore them whenever they do anything like that. Most likely they are looking to get a reaction out of you, so if you don't give them one eventually they will get bored and leave you alone.

People who do that are just trying to fit into the bandwagon that all because you wear 2.0, you online date.

I think an OD'er is someone who is doing the opposite of, something againt, or is different from the other people in the server.