Do I have any right to be this ticked off?

WARNING—This is about something very petty and stupid, but it is still bothering me.

A few days ago, someone I follow on Twitter, a transgendered artist, sent my home email a spam link telling me how I could make more money. There is a picture of her up in a bra and panties, and the thumbnail just looks like some pornstar or something. Well, while I was out with friends, my mom saw the email and freaked out. She printed it and showed my dad. The following morning, she confronted me about it, (i know she won’t admit it, but I know she thinks I was trying to make a porno or something) I told her it was a spam email from someone I follow on Twitter, she said that’s what my dad said. So I asked why she was asking. And she told me to have better judgment and to not follow creepy people on Twitter. I told her I was 21 and I have great judgment and I’d follow who I pleased, thanks.

Later, my dad came up and told me to unfollow this person. I told him he had a really interesting double standard. I told him it was weird that I couldn’t follow a transgendered recording artist, who tweets about their music and performances, but he could follow “shit my dad says” with sexually explicit, insulting, nasty things this old guy says. He said I had no right to “challenge” him, and that while I was in his house, blah blah blah.

This tiny, silly thing exploded into something big and super retarded. Should I still be angry at them for this? Or just comply and “unfollow” Nikki Exxotica?