It's always the same.
There isn't any room left
to dispose of the waste
due to the lack of a bend.
Always the same.
Are there lots of socks in there?
Or just a couple?
Or just one?
What am I missing here, and how can I fix my toilet?
Each line defines an element of a sequence. There is one element missing (or two, depending on your opinion), and the missing element can help fix the problem. Some lines aren't very helpful and some are. The next hint will say which lines are the most revealing. Happy plumbing!
Solving any two of lines 3, 4 and 7 will probably lead to solving the whole thing. Line 2 is also fairly helpful. Lines 3 and 7 should be considered in the context of the rest of the puzzle. Lines 2 and 4 can be considered out of context.
In each of these cases, think of a single word answer. Don't think too deeply, the answers are very simple. Line 3: How would you normally dispose of waste, in the context of a toilet? Line 4: How would you describe something that doesn't have any bends? Line 7: How would you normally describe a quantity of socks?