i got some retarded ass friends, but i love em tho they make my life nicer.
Oh dear, it sounds like you are making fun of the mentally disabled. Why would you want to do such a thing?
I don't care what you say, they are retarded and I am joking about them.
I still don't quite understand your situation, but no matter the circumstances, it is very hurtful to continue to use the term "retarded".  If your friends have mental disabilities, it is good that you love them for who they are, but you shouldn't use such disrespectful terms to refer to them.  If, on the other hand, you are just saying that you think your friends make bad choices, then it is offensive to both your friends and to the genuinely disable to refer to them that way, even in jest.