My workmen spent so much time talking to their girlfriends on the cell phone during workhours. Since they are all my friends, and I know the girlfrends, I acctually called the girls and forbid them to call them when they are working. They nagged, I say I would fire them if I catch them talking to the girls again, If you wanna talk send an sms and he will call you on his break. Damn! They obeyed. Wohohoh how gratefull were the guys for me, all straight 8 hours of not-nagging. Plus I could work in peace and they had something to talk about when they meet them in person. :)