The Voice

I was in the public toilets and had just sat down, a voice from the next cubicle said:

VOICE: Hi, how are you?
ME: Embarrassed I'm doing fine?
VOICE: So what are you up to?
ME: Just doing the same as you , sitting here!
VOICE: Can I come over?
ME: [Annoyed] Rather busy right now!

The voice then said "Listen , I will have to call you back, there's an idiot next door answering all my questions."

ME: Oops!