Firstly, please note that the first word of your phrase is considered mildly/medium offensive. One of the teachers here is particularly bothered by it and I seem to recall that hearing it makes her scrunch her face up in distaste! So please don't write it in full. Replace the vowel with an asterisk from now on please.
Your use of "p*ssed off" is correct. It means to be angry.
However, "to p*ss off" means two things. 1) To make someone else angry 2) to leave
I was p*ssed off with his behaviour. Correct.
Don't p*ss off - this doesn't make any sense. It effectively means "Don't leave" but we wouldn't use it in this way.
Don't p*ss me off - Don't make me angry.
He will p*ss off if you him any questions - He will leave if you ask him anything. That is an unnatural statement.
He will get p*ssed off if you ask him any questions - He will become angry if you ask him anything.






