It's not the worst thing, but it makes me cringe when I think about it.
One time I was walking back from the sandiwch store at my school with my headphones in as usual, but this girl was talking and I didn't have my glasses on so I couldn't see if she was talking to me or not. So, I took my headphones and looked her in the eyes and said "Excuse me, what did you say?" But when I got close enough I could see she was on her cellphone, but it was already too late. So I put my headphones back in and sped off with my head down. u.u