it either,swaer on your own life!dh had a run in with his boss last dec,dh was off work as he slipped on ice on way to work and hurt his back,his boss swear he saw dh in asda running past him,at the time it was snowing,the car wasnt working,dh could barely walk let alone run and no way he would have bused down there,yet his boss swaers it was him and swore on his wifes cancer to come back that it was him!
he even said to dp you think in sick in saying that,dh just looked at him and said you say whatever you want but it wasnt me and walked off.