Corridor
The canopy guy is a guy who stands in the corridor trying to sell people canopies.
You walk through this corridor every day, and the canopy guy always accosts you with canopy sales. You wish there was another corridor you could take, but it's the only way to get where you want to go.
ろう
None
None
You take the corridor, but this time the canopy guy is gone. In his place is a new salesman. This one is trying to sell you roe (ろう).
The roe salesman in the corridor is worse than the canopy salesman. They're both insistent, but the roe salesman smells bad.