I'm putting this after the jump since these may qualify as BW2 spoilers.
So here's the deal: there's a sidequest that can ultimately net you Pokémon with their Dream World abilities. Before I get into the sexist part, though, let's take a look at what this sidequest is, courtesy of Serebii:
To get these trades is
rather convuluted. You first need to find the Forgotten Item in Nimbasa
City. From there, you will be called when you enter random areas by the
owner of the item. After the 10th call, the person will call you and
tell you to meet in Nimbasa to return their Item. When you do, they will
be added to your Xtransceiver. Call them to total 30 times, but you can
only call from places which fulfill the conditions. On the 30th call
they'll tell you they want to meet at Nimbasa City where they'll ride
the Ferris Wheel with you. Call them to total 50 times, in the 40th call
they'll be 'SOUND ONLY', in the 50th call they'll be wearing their work
clothes, and cut the line in a second or so. Call them a 51st time.
wait a day and then call them again and they'll meet you in Nimbasa City
and offer to trade, willing to have any Pokémon. This can be repeated
each day to go through all of their Pokémon. The Pokémon you receive
varies based on your gender
My first thought when reading that was, wow, that sounds like one of those crummy rumors about unlocking Luigi in Super Mario 64, or thawing out Zora's Domain in OoT. But the real catch is when you take a look at the last sentence. Turns out the Pokémon will be the opposite gender of your character. Meaning, if you want to be able to breed those DW abilities (and thus get one of these Pokémon without a nickname), you're going to have to pick the male character. Period. No way around it. The worst part is, they knew what they were doing. They have a long history of making female DW Pokémon hard to access, and then they go and gimp whoever picks the female character this hard. Bravo, Gamefreak. Fortunately, the only ability that's currently exclusive to this method is Gluttony Snorlax, and I don't think anyone's going to lose sleep over that. Still...