Imagine a snake-like whumper that coils around and hypnotizes his whumpee into a dreamlike stupor just before depositing his venom into their system. What does the venom do? That's up to you! But it'll be hours before it wears off...
Okay but imagine if the venom caused temporary blindness. So the hypnosis that snake whumper used is bound within whumpee's clouded eyes. They can hear Whumper, they can feel Whumper but their vision tells them they're still lost in a dream. And even if they manage to wriggle away, they can't get far. Whumper will watch them stumble around, trying to find the way out, until they've exhausted themselves. Then snake whumper will gently slip 'round whumpee again, capture them in his coils again. Of course they're afraid, they protest, but can't escape. And Whumper soothes them, promising it's all just a dream and they'll wake up soon. Very, very soon...
