Bet you didnt know

I bet you didnt know that a bathroom sink also doubles at the bin! Its amazing that in all these years no-one has every wondered how the rubbish gets from the sink/bin to the real bin under the sink. Come to think of it no-one has ever wondered how the rubbish under the sink gets to the green bin outside.
It really is a mystery, I wonder how that all happens.
I guess we will never know.
see ya