Underground Protocol 3: Infiltrating the Sewer System

As we descend into the depths of the sewer system, our senses are assaulted by the pungent aromas of rotting garbage and despair. But fear not, for we have a plan.

Step 3: Infiltrate the system through the manhole cover in the alleyway of 345-Baker Street.

Using your advanced ninja skills, navigate the narrow passages and avoid the roaming packs of wild raccoons.

When you reach the main tunnel, signal your presence by sending a coded message in morse code using your trusty morse key. The password is 'TAPES-ARE-EVIL'.

The system's AI will respond with a challenge: 'WHO-ARE-YOU-AND-WHY-ARE-YOU-HERE?'

Your response must be in the form of a 5-word poem, and it must contain the word 'SEWER' exactly once. You have 3 chances to get it right.

Failure to respond correctly will result in a system-wide shutdown, causing the sewers to flood with toxic waste and rendering the entire city uninhabitable.

So, what will it be?