A woman has 10 holes in her body and can only get pregnant in one of them.

@PaleandPolluted don't forget the eye sockets, they are holes as well...

@Stephie @PaleandPolluted then it would be 11

@Royricky09 well, you seem to be the mathematician here. I did not count. I simply added those two that most people would probably have forgotten to mention.

@Stephie no offence

@PaleandPolluted you may have forgotten the belly button which is also an entrance (or exit), albeit plugged and an important one that has also been omitted is the urethra.

@Stephie ahh yes!

@PaleandPolluted I count each nostril as one single exit because until they are separated by the septum and only merge further up at the nasopharynx.

Now, if you really want to be very picky and finicky, then you should also include both tear ducts that connect the nasolacrimal duct with the lacrimal gland.