I was writing a story where Boy A was trying to confess to Boy's B sister. And Boy B doesn't like the thought of that, so he tries to keep his sister away. He overhears someone saying that Boy A will ask his sister out today and Boy B goes,
"Not on my watch, he will." I'm thinking if this makes sense, or should I replace 'he will' to 'he won't'. Either way, I always end up being confused whether to use he will or he won't in different scenarios. Can someone clear it up for me?
Another example I tried fiddling with was this:
The cat was going to puke on my bed and I yell, "Not on my bed, you will/won't!" Should I use will or won't?