"You did that so smoothly"

Yes I did kid, yes I did.
Been fixin bikes since before you were born.
She was just all befuddled there.
Trying to get the chain back on.
I have to admit it is always strange though.
Some middle age guy walks up.
"Do you need a hand?" I said
I always seem to get a look of fear.
You can see the suspicion on their faces.
Like I must be some evil bastard.
But alas, I am just some guy.
Some guy who knows how to fix a chain.
It took about 15 seconds to fix it.
She compliments my smoothness.
And off she rides.
I may not believe in karma.
But I do believe in helping people.
And off I went to dinner.