I always warn my neighbor not to put their rubbish near my corridor, and if they do I will give them jialat jialat.
When my neighbor defies my order I will knock on their door and tell them I'm going to the gym to pump iron.
So every time they throw rubbish near my corridor I will paste notice on the corridor and announce that I'm going to the gym to pump iron.
My neighbor very scared when they hear I'm pumping iron in the gym.
Stupid!