I called my mom a once when I was 17 in the heat of an argument, and let me tell you ... my dad never let me forget that day.
My kids would be in ICU before they could finish the "-p" if STFU was ever directed to me in my house. And you can ask them right this very minute as they are scrubbing every inch of the upstairs of our house for the they pulled this morning. I don't give a if you're 12 or 20, you have NO right to talk to your parents like that in their own house. EVER.
You have no idea how lucky you are that they've let you mooch off of them for as long as they have and that you're dad didn't lay you the out.
Wow.