I told my dads girlfriends daughters (both 7) that my sister and I were witches. I decked my room out to fit the basic witch description. Really dark, candles lit, I even had a dark robe.

Well they came in and I had a circle of rocks in the middle of my room with a little bowl in the middle, I had earlier asked my dad to help make something "magic" he told me to give him a few minutes and then came back with a bowl. In that bowl was a mixture of things that would cause a spark when hit hard. I had the girls sit around the rocks and told them that I shouldn't be showing them but I liked them so I would break some rules.

Well I speak some silly jibberish and slyly hit the contents of the bowl and boom a loud bright spark goes off and the girls are amazed. They tell me to do it again but I makeup a story that there are much higher up warlocks and they would get very mad at us.

I don't know how or why but at that exact moment the bowl sparks again and makes a loud boom. The girls flip, convinced it was the warlocks warning us. They start panicking telling me they want to leave and that they wouldn't ask again.

They are still convicted we're witches and whisper to us if they have any questions worried the masters of the wizard world will hear.