Oh, my aching bones! That dreadful neighbor's been up to no good again! The nerve! I've had enough of their shenanigans. This time, they won't get away with it. I'll show them what a grumpy old grandma can do!
First, I'll check my arsenal. My trusty cane? Check. My dentures (for rattling, of course)? Check. My piercing glare? Absolutely check. Now, let's see... I need a plan. I can't just barge in there; I'm not a spring chicken anymore. I'll need to be strategic.
Perhaps a little... psychological warfare is in order. A series of increasingly ominous knocks on their door, escalating in intensity. Followed by strategically placed, slightly menacing objects near their windows. A strategically placed garden gnome might do the trick. Or maybe a well-timed shriek from the shadows. Yes, that'll be perfect.
I'll start with the knocks. One... two... three... BANG BANG BANG! That should get their attention. Now, for the gnome... and the shriek. I'll make sure they never forget Grandma's visit! They'll be begging for mercy before I'm finished! Hehehe... This is going to be fun!