‘Bitches’ is a pretty chauvinistic thing to call bitches, uh, I mean women
It’s also the name for female dogs, which ties in to the last line
The first part of the line is subverted by the second part just like the last line. Doom doesn’t use ‘bitch’ a lot, so he’s using it here to make a point — like, use of the word is overly chauvinistic.
He’s being purposefully ironic by using a chauvenistic reference for females, who think that he is overly chauvenistic. Great line!
This video is processing – it'll appear automatically when it's done.