Well, this is very true. I used to work in a police forensics control room.
During a detailed conversation about a rape, a conversation may go:

"blah blah, 13 year old girl, drunk, blah blah, swabs"
"okay, can you just bear with me for a moment?"
*silence for 15 seconds*
"..and i'm back, anyway, swabs, blah blah"

upon listening to the call recording, you hear:

"blah blah, 13 year old girl, drunk, blah blah, swabs"
"okay, can you just bear with me for a moment?"
"I'm going to need a cigarette, if I talk to this daft cunt for much longer, I'm going to hang myself ..and i'm back, anyway, swabs, blah blah"
( TonyUNDERSCORE from the Internet, Mon 13 Oct 2008, 21:36, Reply)