been there..
Stood in the middle of Tesco on the phone walking a friend in India through a particularly nasty issue to do with internal security certificates on a WebSphere Application server NDM deployment, visualising the console GUI and even moving my fingers as if they were the curser to keep my head "in the zone". yep, you do get stared at and no I didn't care as I was on decent £££ for it ( that 20min call paid for the weekly shop and a nice bottle of whiskey to celebrate )