I grew up hearing about the benefit of laughter, how wonderful it is for health, how people who don't laugh a million times a day are sorry hallow husks of human shells. I grew the habbit of laughing a lot, making stupid jokes I find useless waste of breath which made me feel dead inside, what a joke. I hate laughing, still better to play along around certain people.
I remember having a one hour class of therapy laughter in primary school. Horrifying.
Laughing out loud is a cultural thing around here, or at least it seems like it to me.