It must be done every time unless you shower with the girl and you know she's "fresh." It's the worst feeling going down there and having that puking feeling when you smell that stinking ass twat. It should be common practice for the girl to stop you if she knows she not fresh. Come on ladies, just be considerate. And NO its not natural. If it is natural that you smell like a dead fish then deal with it.
This was in no way intended to offend ladies that don't practice proper higiene(SP?). Just wake up and smell the.....