My mom is damn angry now.

Why? It's the same ol' 20th storey ppl again.

They hung their drippin' wet clothes outside, with no consideration at all for people living at storeys BELOW them with clothes to hang.
And this ain't the first time; it happened countless times before, and my mom told them about it before. Still, they don't change.

What's more, they COMPLAIN about us complaining about them. Well, if you want us to stop complaining, than YOU stop hanging all those drippin' wet clothes outside! You can always squeeze your clothes slightly dry or hang them inside your house BEFORE putting them outside.
Don't you care about others who might want to hang their clothes out too? It's not only you who wants to do that, you know? The "hanging clothes" privilege doesn't belong to you only.

At least WE dry our clothes before hanging it out. We are considerate. But you are NOT in this case, as you hang your wet clothes out, and the water dripping from it might drip onto other people's clothing .
It's not only us, there might be others who live below us who are getting this problem too.
Imagine how annoyed you would be if your clothes, which you hung out to dry, were going to dry completely already AND suddenly, water starts dripping from above onto those clothes. Then you have to wait again for it to dry, because of some inconsiderate _____(colourful language here). Worse, you have to wait for THEIR clothes to dry first because its' water is still dripping on your clothes.

An Even Worse Scenario : Dirty mop water dripping on YOUR clothing. Would you like it if I did it to you too? If not, then stop doing it to US!