Argument with Father

Basically, I help my dad with money in terms of loaning him lets say £400 etc so he pays his bills. And recently, my dad used really bad words for simple things I do for a joke. and I told him, he should give me some respect because I am not like any other son but I help him with money and financially, even though he pays me back. My mum then told me you were so wrong of talking about money and could have just said give me respect because of my age (im 20). I feel really bad cos he's my dad but then again he started all this by using disrespectful words, event though in hindsight he said it casually and didnt mean it. Whats worse is he came up and said sorry to me first and I said it back but still I feel hella guilty? Any tips or comments or anything would be appreciated.