Darwin didn't miss much, I think we all agree, and came up with a lot given the limited science of his day.   One thing he missed, that by this time tomorrow will be the source of outrageous titles from every schlock science publication in existence, was that sexual selection that goes on even after actual sex.

Confusing?  It's not so difficult to understand.   Some female critters are trampy and have sex with more than one guy, for example (what, you think other parts of the animal kingdom don't have Jenna Jameson?)  so there's sperm competition but there are also other factors having to do with the internal workings of the female body (i.e. that magical place), so let's catalog a few of post-copulatory sexual selection's greatest hits:

When you go to New York City, to Central Park, to the American Museum of Natural History, to the Hayden Planetarium, to a seminar hosted by Neil deGrasse Tyson, on the entire cosmos, you might think it would be hard to figure out who 'the star' will be.