when people ask about my stimming I tell them that it helps me focus. otherwise I would space out and not listen to them. that's how I got through school with all my fidgeting- I was actually the only kid allowed to chew a gum in class, and I wasn't even diagnosed with ADHD yet. good teachers, I guess.
ADHD is a socially acceptable excuse for weird behaviour. it usually works for me.
as to social situations- people will comment on anything, they love to gossip and talk about others, no matter what you do you will be talked behind your back about. be picky with who you make friends with.
_________________
not a bug - a feature.