i watched Turkish football a few times, ive seen many many many many banners that i later found out said 'son of a prostitute' and such the like,
was funny,
Doesn't it basically happen anywhere when playing against Spanish opponents? "Hijoooo de puuutaaaa!!!" 
Anyway, I guess "bastard" has lost its connotations, since being born out of wedlock is not a huge taboo anymore.
"Son of prostitute" is different, there are words for it in the Dutch language too, but apparently not in English (all I can think of is Stan's grandpa yelling "son of a whore" at the grim reaper in one of the very first South Park episodes...).
If female comrades are bothered by it, they shouldn't just be ignored. I recently read that very often, when males express concern over sexist things, other males easily listen to them. But when females do so, the most common reaction is: "Oh, stop *****ing", "stop trying to act offended", etc.
What's the matter Lagerboy, afraid you might taste something?