I have a devious plan to plant some weeds in my elderly neighbor's yard.
Why would you want to do that to your neighbor?
It was a joke. If I wanted to, I would have already done it.
A good neighbor can make you feel welcomed in a new place and offer assistance during an emergency. instead of playing pranks, you should find ways to make the neighborhood more livable.
Can't you get a sense of humor?
Regardless if it's a joke or not it kind of seems like you had the idea already in your head. Mainly trying to say that it's not worth messing with your neighbors yard. Most likely will get in trouble with the law.