i could tell you, but then i'd have to kill you

I’m not telling you my secret. I’d rather throw you out of a window.

My friend said, 'I could tell you, but then I'd have to kill you,' and I threw a pillow at him.

My brother said, 'I could tell you, but then I'd have to kill you,' and I ran to the kitchen.

My mom said, 'I could tell you, but then I'd have to kill you,' and I asked for ice cream.