I especially love finding out that the Wikkipedia entry on is not only not worksafe, it also has a video demonstrating the male ejaculation.
[I checked. The information is solid. Heee!]
No definitive answer yet about the source of "cum" in place of come as a sexual term, but so many play on words that I can't stop laughing.
Yes, I'm procrastinating. Why do you ask?
Edit: Somebody needs to (on purpose) write a hilariously bad PWP using "cum" for all "come"s.
Don't look at me to do it. I can barely write about kissing. Yes. I suck.