Harmonica. Lot’s of joy playing but I quickly realized I’d like another in a different key to have a wider pitch range.

My experience is it’s used as “go fuck yourself” when it’s coming from strangers or people trying to place themselves as superior. In more familiar relationships, it can also can be used to express sympathy (especially about pain or difficult circumstances), as thanks, or to communicate you’ve misunderstood something (but it’s okay that you did).