Beyond happy, happier than any one person has a right to be, so happy it makes others want to be sick or violent, stupid happy.
When you are so happy you need multiple synonyms of the word happy just to stress how stupid happy you are.
Karen can't stand how ridiculously happy Jared is with his new Girlfriend, it makes Karen want to punch her in her stupid face.
They are so happy it's ridiculous; ridiculously happy.
Someone gave Chloe KFC instead of whatever the Hell she ordered.
Chloe: I asked for a beef fillet with fois de gras not this poor person food (Throws KFC at someone in a massive fit of rage) This is so ridiculous utterly ridiculous!
What a Karen, am I right?