I Like to Terrorize My Sister (and Gramps thinks it's funny)

I'm the big girl now and I make sure my sister knows it by poking her in the eye. I'm really quick at it too, so much so that people don't know if I really hurt her or not. Gramps is getting slow in his old age and he completely misses the torture maneuver. (He's not really laughing at the crying baby.) She's too much of an angel anyways, and the way mom coddles her, well I figure she needs some pain in her life.
(I also really like to throw heavy objects into her crib when she's sleeping.)

Special Note: Gramps isn't senile yet, and I only terrorize little sister 3.5 % of the time. The other 96% of the time I give her tons of love. The other .5% is undetermined.