All parents sacrifice time, money and their own wishes for the well being of their kids. Maybe they don't always show it and perhaps they are sometimes annoying, but they do. Introduce your friends and special someone to them. There are times they make you feel bad, and you might have even wished you had been born in a different family.
Your hugs and kisses show how grateful you are for having them as your parents. Express your gratitude to them. Talk to them constantly.
Sure, they won't. Crossing your arms in front of them, even if you are discussing something peacefully, is like showing them you are of the same level.