And here I thought third wave feminism was sex-positive.

That's postfeminism, I think you mean? And mainly postfeminism isn't "sex-positive" so much as it is a reactionary backlash against 2nd wave feminism's tendency toward slutshaming any woman who didn't fall into line and march alongside her sisters (ALLEGEDLY).

Postfeminism is "sex-positive" in the sense that it's all about how awesome it is to be girly and how gross and narsty those annoying feminists are; girls should go wild! according to this kind of postfeminist attitude. If a woman wants to stay home and raise her kids, well, darn it, postfeminism says there's nothing wrong with that, and it's the dirty stupid "you can have it all" feminists who want to kill the American family! Or who want to shame the women who don't aspire to the things that 2nd wave feminism said women should aspire to. If a man makes a joke that degrades women, the postfeminist says "LAUGH AT IT!!! because it's FUNNY!! why are you so sensitive?!?!" The postfeminist is dtf and she's fun as hell...until you criticize her in some way that she thinks is trying to shame her for just being a woman. And then she's not so much fun.

3rd wave feminism isn't so well defined and I don't think that "wave" has quite crested yet. I see you linked to a wiki page on it, but I'd be surprised to see it offering some kind of cohesive definition. In lots of ways, postfeminism wants to be called 3rd wave feminism...but it lacks credibility since it mostly seems geared towards calling female activists bitches and telling them to stfu about gender-based oppression already.

I'm sorry, but this makes no sense.

Here let me help:

http://en.wikipedia.org/wiki/Sex-positive_movement -- "sex-positive" is a term describing a movement meant to embrace rather than repress sexuality. The play on words of "sex-negative" refers to the opposite of sex-positive, ie., sexual repression.

OP is saying that you are sexually repressed because sex jokes make you uncomfortable. This is a good point, because dongle jokes are actually not "sexist", they are simply sexual. Men hold no exclusive territory over dick jokes, or sex jokes in general. Women can tell dick jokes too. They can also joke about vaginas (Sarah Silverman much?) and both genders can appreciate the humour EQUALLY (yay equality!). Those who don't find it funny are NOT victims of sexism-- they are victims of a shitty sense of humour.

Do you make sex jokes at work?

It doesn't surprise me that you can't parse it.

Classy, first you imply that I don't like sex and now that I'm a moron. Boy am I glad that we don't work together.

I like sex, I just happen to prefer my work/professional environments without sexual overtones.

Conferences are generally laid back environments. Of course sexist exclusionary shit that assumes conference goers are male is wrong, but making a totally non-sexist joke to your mate in a talk? Fuck that shit.

Conferences are generally professional environments, which means that some degree of strictures on behaviour is normal. Conferences that are trying to be welcoming to groups that historically have found them unwelcoming try to limit the things that make them unwelcoming. Things like 'Dongle jokes' have been identified as one of those things. The Pythonic way is 'explicit over implicit'. So, Pycon's code of conduct. Can you understand this?