Smart Asses

Why is it, you always get one smart ass to pick you up on everything you do or say. How bloody annoying is that. Its as if they have nothing else better to do with their time. I find it happens online even more. Why??? Okay life would be sad if you could be prefect. wouldnt it??? It buggs the sodding life out of me. So people so being so annoying and find something else to do.