A careless answer

Our new assistant, Christy 16, was in her first office job. Co-workers were giving her basic instruction as the boss stepped out of his office and the telephone rang. Christy answered professionally, but then birst out with: "He's in the toilet now."
"Oh, no," one employee whispered to her, "Say he's with a customer."
"He is in the toilet with a custmer," Christy told the caller.