The Trash Can

This morning the trash can was full by 0900 and then by lunch time the trash did not increase nor did anyone take any out.
By logical standards, the trash can should have been overflowing or with trash set next to it by lunch but it wasn't.
So, therefore, when the can is empty people use more trash than when it is full.

Or

No one wanted to take the trash out so they were watching there trash use more carefully so that someone would not tell them to take it out.