Sounds to me like he is just dissing a whole bunch of women and telling them to suck his dick while he is taking a crap and swallow and stuff like that. So Iggy is just one of the names he is throwing in there. Like maybe he is saying she should just put that rape whistle away because she knows she wants it.
She is lucky that he is only going to rape her (if that's the case) and not the other stuff he is making other women do.