Cola a form of birth control?

[Miss Vicky]

I was browsing my local bookstore yesterday and came across some very interesting/disturbing info. If I remember correctly it was in a book called "The Little Book of Bad Taste."

Among other little bits of information, it said that in some countries cola is used as a post-sex douche. An American study (it gave details but I can't remember which University) studied this and found regular cola to be 90% effective against pregnancy. Diet cola was found to be 100% effective.

I've heard of using cola as a toilet bowl cleaner, but not as a cleaner for... umm... other things. Makes you wonder about some of the things we consume.