They may not be tasteful, but they are only jokes.
No they are not! They become sexist or racist representations and as such are really unacceptable. If your sisters/mother/wife were all gang raped you certainly wouldnt like us all calling them a bunch of whores as a joke.
In this case I think the men have a need to meet a chainsaw, between their legs, and just after they are raped by a bunch of gays.