I know all of bad words in sign languages. Hearing people are same with deaf people's sign :fu: and asshole. I can read hearing's lip with cuss. I know how to use my voice say :fu: and all. I used to cuss a lot at high school. I started to learn bad words when I was in Elementary and Middle School.
I don't use cuss that much. Whoever make me piss off. I will cuss them when I was in bad mood.