I'm thinking of lowering my handful of leaves so the giraffe can't bend far enough to reach it.
Why would you want to torture the animal?
I want to watch them struggle a bit.
You shouldn't be teasing the animals when it comes to food. they could get angry if they are hungry enough and you would get hurt. If you are going to be mean you shouldn't feed them at all.
I just don't like the giraffe looking at me.
If you don't like them you can go visit another part of the zoo and see some other animals. Nobody is saying to have to feed them.