This annoys me for a slightly different reason.
I often get told to cheer up. Like if I'm on a night out and we're just talking with friends and I'm not in the conversation, people often joke that I should smil emore.
Do people just stand there smiling?
Obviously they do or I wouldn't get told to cheer up, but if I stand there grinning I feel like a right idiot.
I smile when somethign makes me smile. Not just when i'm standing there doing nothing
sounds like you need to cheer up a bit