Im sitting on the central line facing one of life's awkward situations. I have a complete stranger sitting next to me with her, yes her, arm round the back of my seat. What do i do?! This is the second time in a week its happened to me. Now, the undergrounds a cramped place & to have what little personal space you have invaded by an arm is disconcerting & quite annoying! Thankfully im getting off in a stop or 2, just remember this....i might look friendly but please dont put your arm around me. Im not that nice!