happiness attack when you are so happy you can't controle yourself like in a anger attack or a panick attack. But instead of beating the shit out of things you hug the shit out of pets or people because you are just so happy. Translated from the dutch word 'blijheidsaanval'
Amy: auwh your hurting me, don't hug this tight
Rose: I'm sorry {hugs tighter}
Rob: she's clearly having a happiness attack