Joking aside. Being as you know what that is. Do you know if there is a lot of pressure in that hose/line? I'm wondering if I even need to bother finding the connector since the hose clamp seems to be nice and tight.

 

Basically its a charcoal canister that filters the "fumes" back in the engine rather than letting them escape.
When the vehicle is shut off, there is a pressure imbalance within the fuel tank caused by fuel being siphoned out, but no air being let back in to take up the empty space. The lower pressure in the gas tank promotes a greater rate of evaporation, letting some of the fuel become a gas. Eventually the tank's internal pressure equalizes, at which point the gas leaves the tank through the vent port and goes into the carbon canister. It's trapped there by the properties of the carbon within the canister, keeping it from escaping into the air. When the vehicle's engine starts, the sudden suction created along the intake manifold opens up the purge valve and pulls all the gaseous fuel out of the canister and burns it in the engine. The canister goes unused until the car is turned off again.