Strange things that makes me want to curse and swear

Fridays
For some reason, I tend to swear and curse more on Fridays. I suppose it has to do with the weekend coming and a certain sense of ease coming to me. Yet, I cannot quite explain why I find it so immensely pleasurable to let fly (at things rather than people, I'd like to precise). There is something of the guts in a good curse, something that needs to get out. Which brings me to the point: can you get sick if you don't swear?