In my professional capacity as a doctor I've come across that often in women. Its called mens vulgaris or more simply put ... a dirty mind. I normally prescribe a hard spanking followed by a good shagging.

And yes one way can become monotonous, thats why its best to roll over for 30 minutes every few hours. But the subject of monotony may be a good topic for a new thread.

btw - empty your mail folder.