When you say leaking, what sort of quantities, velocities etc are we talking here?

If a man ejaculates inside a woman sans condom, and she then lies down for snuggles or sleep or angstiness or whatever (please, don't detail the whatevers you've found on aff.net for me), she's going to be feeling a bit... damp, thanks to their combined fluids.

If she gets up the next day, throws her knickers on, and dashes straight out to work, she's going to be finding semen in her undies all day. This is decidedly Not Pleasant.

If a woman has the sense to go to the toilet immediately or shortly after sex (because we don't want any UTIs, thank you very much), then some semen can be wiped away, and "bearing down" (as I believe is the technical name for those pelvic contractions used in passing waste, giving birth, and removing garlic if you're into home remedies for yeast infections) will help to remove much of the rest.

If a woman is trying to get knocked up, therefore, he best bet is to shuffle about immediately after sex so her legs are leaning up against a wall. This prevents leakage and so aids conception.

And that got disturbingly graphic, so maybe we should keep further technical sex questions to emails.

...I blame washing powder commercials - an entire generation, perhaps more, of children has grown up thinking that enzymes are little Pacman things that eat dirt. No doubt it will take years to clear the confusion up.

People were coming to my university biology classes holding this belief like some article of faith, much to the consternation of the professors ...

I know ages of consent vary, but what matters is the legal age in the country that houses the servers that host your fic. And if you're posting on lj, that's America. (Or is it Russia now? I lose track). The age of consent on livejournal is therefore 18, even if you're English and writing about English teenagers having perfectly legal and consensual English sex.

When all this kerfluffle went on last year (I seem to recall it was some extremely conservative American group causing hassle, or claimed to be; I forget the specifics), the rule being implemented was simply No Sex Involving Minors. In the ensuing purge of livejournals, fanart (and not necessarily realistic art) of possibly-minors was hit, as were some journals and.or communities in which people discussed their experiences of sexual abuse. Suffice to say, it was a tad silly, but the net result is you're better off not taking the risk.

Of course, locked posts are another matter, because it's not like the general public is just going to stumble upon them, be outraged, and report you.

And they do - there are underage Boarders who read mine and Trojie's missions, after all. All it involves is logging out. But at least lj can then say they tried.