Bunnies use body language, voice and even poop to send you a message. If my bunny, Rucy, doesn't like something her human or bunny friend is doing, she'll give a quick little ear flick and turn her back to us.
Jack binkies when he begins to feel active, and when he's about to get a treat, but he also does binkies when he's caught doing something naughty, and I try to chase him away. I know in the wild, bunnies also do binkies to thwart off their suitor or aggressor. So either it's his way of escaping my nudging him (or squirt bottle) or he's just thrilled to be naughty, and he thinks it's playing.
I also find it interesting that if I shake my head and/or my hands at my bunnies in a binkyish way, they'll many times start binkying too. And Bailey will always come right over to me, even if she doesn't binky back. My first bunny used to do that too. I don't know if they think it's an invite to play or just curious, or ? ?
Do you know what your bunny is saying to you? If so, tell us. If not, explain a behavior and we'll try to help you figure it out.