OP is upset about some semi-racy lines in a video game... and I'm just here kinda impressed that Riot isn't entirely toothless.
Putting in the VO's they did was always gonna get someone or another all up in arms because "OMG, sex is bad! censor it!". But Darius splitting Annie in half with an axe? That's fine. Urgot grinding someone into bloody paste? That's ok. Vel'koz disintegrating people and talking about how he can only tell the females apart because of how the scream? Fine. Not to mention the many, many, MANY skimpy outfits worn by champions in the game, ranging from Janna and MF ro Varus and Braum. Speaking of Janna, her joke mocks making calls to a sex-line. Nidalee pole dances. All of these are fine. And let's not even PRETEND the league community doesn't use suggestive or offensive language in-game all the damned time.
The lines people draw are hilarious to me. And no, the answer isn't "disallow ALL of those things" either. Sex is a part of life, and these days it's one every kid in public school knows about... and every kid with an internet connection has likely SEEN. You do more to make things awkward and twist kids up emotionally by making it like sexual suggestions are so freaking dangerous you have to hide them from everyone. Unless Eve is blowing someone in mid lane, I don't really see how this is a problem. Are your kids so fragile that a woman saying "it's so big" in a video game is gonna ruin their little minds? Or is that only the case because you've raised them like some kind of psychotically over-protective lunatic and haven't just sat down and explained to them about sex and sexual responsibility?
So don't let your kids play the game if it bothers you that much. Lock them in their rooms and only let them watch old VHS tapes of Veggie Tales or something, because that's about the only way they're not going to be exposed to something sexual in the world today. Or you could grow the hell up and teach your kids about these things instead of twisting them into knots by acting like they need to be protected from the SHAMEFUL thing that their developing bodies are making them begin to want.