Just like people have different views on profanity, people have different views on professional behaviour. Personally, I don't consider someone to be a professional's professional until I've heard them slam the phone down and shout "Bloody idiot!" across the office.
Someone who remains calm, polite and considerate under all circumstances has the unpleasant stink of sales, incompetency or both. It's quite reassuring for me to see the occasional cuss, since it indicates that I'm dealing with people who are more interested in substance over style.
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Jeremy
I didn't believe in evil until I dated it.