option 2, as when you take on favors mate and they go shite then thats life, if it was the bollocks im sure you would of just said thanks
now for your dads options, i would sugest him to get a blood test to be sure you are his kid as if hes lucky he mught find out you are really a bastard child you come across and then he will be able to understand how he managed to get lumbered with a discrace of a person he has to address as "son"
in all honesty mate if your family wind you up that bad then maybe you need to spend more time away from them
i dont get along with my folks much and so i avoid them and as a result when we do see each other ( about 4 hours a month

) we are more than social with each other
not everyone in live gets a long and you cant choose your family
and on a more serious note you need to get some form of counciling as if you can switch like that on a person who you used to look up to and protected you as a child, fook knows what your road rage must be like