Why can't some drivers ever use the toilets?

could be worse,you could have a driver in the next cubicle telling out loud that he’s having a ■■■ ■■■[his words]I was in the first one and he came into the second one,next thing I hear is c’mon baby, c’mon baby,i’m having a ■■■ ■■■ out loud to his own little tune,this was at my place of work and he was a visiting driver,i know the company but won’t embarrass him by saying who it was in case he’s on here,i did laugh afterwards though,but I really don’t want a running commentary about it.