MY brother was stupid enugh to think his sister had no guts .... when aged about 6 tried to pull me off a FAST moving swing .... needless to say I knocked him to the ground and he almost was taken to hospital for stitches ... but he got better than that ... grandma's fix -- rub it firmly with vicks!
Another time I decided whacking him with a rolling pin would be good revenge (for i can't remember what) -- I got in (what then seemed like) big trouble. LOL
Never underestimate your sisters strength when you annoy her frequently and *seemingly* get away with it