Say that you and your partner thought it would be fun to engage in a little erotic asphyxiation. You're pretty sure that she said a little dildo-anal action was okay, but now she kind of... passed out. You can't wake her up and have her officially consent to anal fun-time, so do you go ahead with it anyway?
Sure you do.
And everything's fine. But then you have a fight with her 2 months later and, you guessed it, now she says it was non-consensual. You go to court; lose. You appeal; win. Now the case is before the Supreme Court of Canada! (How 'bout that, eh?)
The court is now going to have to decide whether a passed-out woman from voluntary erotic asphyxiation could have given consent to having a dildo shoved up her butt.
Who says the law is boring?
How do you rule? I'm going with innocent here; they were dating, they were having sex, she agreed to be choked out. I'm sorry- you're saying that she had a "line" somewhere that was crossed? Huh?